Your only going to make good numbers with the t3 .70 hotside housing and lots of race gas/e85 and boost. Don't exspect alot on pump gas with those turbos. buy a gt35 or something nice holset is a waste of money imo, unless you throw alot at it.

I would love to know the answer to that also I have a good friend that has a hx-35 with bep housing and took his car to 2 different shops to get tuned and only made 290 something.

clipto said:

Your only going to make good numbers with the t3 .70 hotside housing and lots of race gas/e85 and boost. Don't exspect alot on pump gas with those turbos. buy a gt35 or something nice holset is a waste of money imo, unless you throw alot at it.

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well the gt35 is really way out of my price range. it would be nice but once I add up the manifold/wg its more than my car

holset hx40 at mitsu bep seemed like cheap option if it would only make 450whp.

at a t3 setup theres a guy at classified selling one for 1k. still pretty good but im short acouple hundred.

and e85 is what im running now. so i was looking for something that could make my goal at around 25psi ideally but Im willing to run 29psi if I have to.

dfwdsmer said:

I would love to know the answer to that also I have a good friend that has a hx-35 with bep housing and took his car to 2 different shops to get tuned and only made 290 something.

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what gas and what psi?

I figured this turbo wont come alive below 20psi.

my e316g doesnt even wake up till 23psi.

Punishment racing sells the twin scroll t3 housing for these for like 997 new last time I checked.

dfwdsmer said:

I would love to know the answer to that also I have a good friend that has a hx-35 with bep housing and took his car to 2 different shops to get tuned and only made 290 something.

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Either the tuners, seriously sucked or there is an issue with the car. A 14b produces that much power and can make alil more.

He was on pump gas (93) and I do believe he was on 22 psi don't quote me on that will find out. One shop Tryed saying it was because of his exhaust not having a cat in it

dfwdsmer said:

He was on pump gas (93) and I do believe he was on 22 psi don't quote me on that will find out. One shop Tryed saying it was because of his exhaust not having a cat in it

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better off going somewhere else....

dfwdsmer said:

He was on pump gas (93) and I do believe he was on 22 psi don't quote me on that will find out. One shop Tryed saying it was because of his exhaust not having a cat in it

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Because no cat? Lol! Funny stuff. At 22psi on the hx-35 he should be moving more than 30lbs/min. Should be much more than that. Sounds like a tuning problem for sure if it has all supporting mods. It could be pulling timing.

The only reason anyone would want to go BEP in the first place is to keep all the stock dsm exhaust parts, downpipe, o2 housing, manifold, ect. Its just a cheaper way to get into a holset. They aren't designed to be power houses with that set up. It just chokes out the potential airflow of that turbo and if you look at the airflow numbers on a bep there not far from a 20g maxed out.

Now if you want to step up to a big boy set up and dont mind letting your dsm stuff go then going full t3 is the way to go. I have personally seen 585 awd whp on an hx40 in a full t3 housing on meth.

I run a 12 cm divided t3 holset exhaust housing on my set up with a custom downpipe. I do not have any dyno number but going from the bep housing its night and day. The hx40 has been proven over 600whp. If your looking for a pump gas power house your not going to find a better hp per dollar chasing after some ball bearing turbo. If you think your going to make 400whp on a 16g easily I think your in for a surprise. e85 is awesome but airflow is still airflow at the end of the day. In a good flowing holset set up you should have no problem making 450 on pump gas. Please correct me if im wrong.

clipto said:

Your only going to make good numbers with the t3 .70 hotside housing and lots of race gas/e85 and boost. Don't exspect alot on pump gas with those turbos. buy a gt35 or something nice holset is a waste of money imo, unless you throw alot at it.

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I guess it depends on your idea of "good". Plenty of people making mid 400 to 500 HP on a 55 with pump gas. In my opinion thats pretty good.

Just from my research not only powerwise but internals wise I had detached from the holsets. I did alot of research and really really wanted one but seemed like it was not ganna do what I thought it would. I do recomend the non dsm flanged housing for the holset if you wanna make power. I am sure you can get those numbers on pump gas, just find a good tuner and depending the mods you putting together with it to support that hp range you want.

400 with a bolt on housing in a HX35 is not reaching for the sky and is easily attainable with the propler supporting mods. This will kill the VE of your motor and I see that a lot in my setup at 30 lbs.

I went to the track last weekend and was logging airflow of 50lbs/min with the HX35 at 30lbs. This is with properly calibrated airflow on a cool night but you get the point. I would post a log but I am not at home.

Here are some passes at 29-30lbs running E85 at a local track. The last video is the best pass of 11.6 and you can also see/hear the front passenger wheel spinning resulting in some bad 60'. The best trap of the day was 126 MPH.

Drag passes after the driveshaft rebuild... - YouTube

You will be happy if you are shooting for 400.

Another note about the bolt on housing is that it really is limited on pump gas. In my specific setup, I started knocking at 23lbs with the bolt on housing and pump gas. My solution was E85 but the T3 housing would be a lot more forgiving towards that.

Robert

Is the BEP housing really restrictive?

No the BEP Bolt-on housing is not restrictive.

I was able to get almost the full 67lbs/min flow out of the bolt-on housing with a 59mm BW S200sx at high boost, but back pressure was through the roof. Point is, it still did it though.

Post a log, I would wager the problem is in your tune or else where in your setup. Even on the smaller HX35, boost in the low 20s should have you moving considerably more than 300whp worth of air.

The advertised .55A/R is to my understanding bigger than a comparable Garrett if they made a .55A/R because of where they take the centroid in the nozzle.

If you are looking to make 450whp at "low" boost which to my mind is in the low 20s you can use an HX40 in the bolt on housing with a very aggressive tune on E85 and a lot of rpm on a big cam..

Or step to a bigger housing.

You'll make more power per psi boost with the bigger HX40 turbine and either a .70 T3 housing or one of the stock HX40 turbine housings

seattleshawn said:

I guess it depends on your idea of "good". Plenty of people making mid 400 to 500 HP on a 55 with pump gas. In my opinion thats pretty good.

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Lol where? My Hx40 made 341 awhp on a Mustang dyno at 24 psi. This .55 housing really chokes this turbo down. That was also on 110 octane. Also the graph started falling down before 7k.

341/276 on a Mustang dyno @ 24psi through an AWD Auto doesn't sound terrible. Why such low boost on 110oct, are you out of pump or injector?

What's your timing curve look like?

Intake and Exhaust manifold?

Downpipe/Exhaust inside diameter?

I see you are on FP2 cams, what is your redline?

AFR? What airflow numbers are you getting?

The .55 housing is definitely not a choke-point on an HX40 at only 24psi.

The HX40's 76/64 turbine is actually a bit bigger than the 74/64 turbine that my S200sx had.

No the BEP Bolt-on housing is not restrictive.

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I have to disagree with this information and you state latter in your post the reason why.

The motor is only effecient if it can get rid of the air as fast as it puts it in. With this smaller housing that can not happen. This builds massive amounts of backpressure (as you stated) and greatly decreases VE. This also makes the motor more knock prone in some cases where there is some valve overlap. If the backpressure is double your boost and you valves overlap, then the supper hot exhaust is shoved back into the cylinder for the next combustion process.

I am not saying that you are totally wrong with your whole post, but saying that this housing is not restrictive is very misleading.

Yes I have almost hit the max airflow of 52lb/min on the 8 blade 35 in the bolt on housing but I have to run 30 or so PSI on E85 to get there. If you where to run the T3 housing you could get this type of flow earlier in the boost range, keep the turbo at a happy effeciency cycle, and run pump gas in some cases.

Robert

boostadd1ct said:

holset hx40 at mitsu bep seemed like cheap option if it would only make 450whp.

and e85 is what im running now. so i was looking for something that could make my goal at around 25psi ideally but Im willing to run 29psi if I have to.



what gas and what psi?

I figured this turbo wont come alive below 20psi.
.

Click to expand...

I personally have a buddy around town to made 640+ awhp on the .55ar housing on an hx40.. Im betting the people tuning your car suck ass.. Best advice would be to do a lot of reading and video watching and learn to do it yourself.

My first time tuning my car ever was on my twin scroll hx35 set up on 93oct pump gas. At ~25 psi Im seeing up to 53lb/min airflow. Which roughly translates to 430whp.

E85 would be best I would say. Very easy to make horsepower and it loves timing. And you're right when I was dialing in my car Id feel it pull a little bit until I was just over 20psi it started to put me in the seat.

robertbaxley03 said:

I have to disagree with this information and you state latter in your post the reason why.

The motor is only effecient if it can get rid of the air as fast as it puts it in. With this smaller housing that can not happen. This builds massive amounts of backpressure (as you stated) and greatly decreases VE. This also makes the motor more knock prone in some cases where there is some valve overlap. If the backpressure is double your boost and you valves overlap, then the supper hot exhaust is shoved back into the cylinder for the next combustion process.

I am not saying that you are totally wrong with your whole post, but saying that this housing is not restrictive is very misleading.

Yes I have almost hit the max airflow of 52lb/min on the 8 blade 35 in the bolt on housing but I have to run 30 or so PSI on E85 to get there. If you where to run the T3 housing you could get this type of flow earlier in the boost range, keep the turbo at a happy effeciency cycle, and run pump gas in some cases.

Robert

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I am fully aware of all that, but the same can be said of 16Gs in the 7cm housings. Many if not most OE turbos are running 2.x:1 drive to boost ratios if not higher.

So we should all be running 1.50A/R housings then?

How else do you propose to spool as fast as these do and move as much air as they do, by your own admission 52lbs/min at 30psi, on a 56+ mm turbo on a 2.0? I don't consider that especially restrictive. Subjective, though that may be.

I had a 59mm BW in a few different housings, I was able to move 55lbs/min ~28-29psi on pump 93 alone in the .55 BEP housing. That is impressive, at least in my opinion. Which I should qualify my posts as such, my opinion. It is an educated one however, and with these housings in comparable turbos.

I don't pretend to be an especially gifted tuner either.

With pump and meth I was able to move just shy of 65lbs/min @ 37-38psi which didn't fall off till it started to approach 8k rpm.

Then I stepped up to the .70 T3 and kept the airflow at with slightly less boost, was able to run more timing and airflow didn't fall off till later in the rev range where the .70 T3 starts to choke.

After that I moved up to the Airwerks divided T4 (0.91? A/R) and maxed out the compressor at 67.x lbs/min with yet less boost and the car didn't start to fall off till the cams ran out around 9250rpm

Now I have a 16cm2 or ~1.21A/R on my current HX52 for running out 3-5 miles at WOT in 5th. But it will be a lag monster as a result of that. If this weren't a top-end only car (LSR/Standing Mile) I probably wouldn't have gone this large.

For a mostly street car, the .55 BEP housing is a great option to get a balance between spool and mass flow.

It is not all that restrictive if you are still moving 500whp worth of air from a sub 60lb/min turbo at only 30psi on a turbo that will service 40psi with relative ease on a 2.0L. Look at the compressor map.

A good tuner and a well thought out combination should have little trouble hitting 450awhp on pump 93 with either the S200sx family of 56-59mm turbos or the HX35/40 family of 56-60mm turbos. Even on the smaller turbines.

Hx40 is a beast, I'm not sure what the hell you guys are talkin about low numbers? Over a year ago I dyno'd 505awhp at COBB TUNING SURGLINE using a hx40 on pump gas at only 29psi. Ill be more than happy to post dyno paper. That same day I got 505 my friend alex (aka boostdriven) dyno'd 580awhp and agin this was on hx40. We've each done are fair share of tricks since then and we both still use pump gas and we both still use hx40. Right now I would bet my balls on a choppin platter that I could clear 550awhp on a mustang dyno right now today with a hx40. My friend would easily clear 600, on a hx40.... How the hell do u come up with low numbers?

boostadd1ct said:

well the gt35 is really way out of my price range. it would be nice but once I add up the manifold/wg its more than my car

holset hx40 at mitsu bep seemed like cheap option if it would only make 450whp.

Click to expand...

I had a gt3561 (oldschool) same as a scm61 basically. Was like $800 new, and I made 452awhp on a mustang dyno at 28psi on e85.
Hx turbos are great but you will spend more money on the oil drain making it the proper size and other misc things. Might as well just get the modern day turbo that cost a little more. Like a 6262.

LandSpeed-DSM said:

If you are looking to make 450whp at "low" boost which to my mind is in the low 20s you can use an HX40 in the bolt on housing with a very aggressive tune on E85 and a lot of rpm on a big cam..

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what is consider a "big" cam? and what exactly is an aggressive tune? max mbt and 12.5 afr?

robertbaxley03 said:

You will be happy if you are shooting for 400.

Another note about the bolt on housing is that it really is limited on pump gas. In my specific setup, I started knocking at 23lbs with the bolt on housing and pump gas. My solution was E85 but the T3 housing would be a lot more forgiving towards that.

Robert

Click to expand...

looking for 450whp.... and e85

yeah T3 seems to be the way to go for my goal. seems like a t3 hx35(7) would be perfect for 450whp.

untouchablecc said:

The only reason anyone would want to go BEP in the first place is to keep all the stock dsm exhaust parts, downpipe, o2 housing, manifold, ect. Its just a cheaper way to get into a holset. They aren't designed to be power houses with that set up. It just chokes out the potential airflow of that turbo and if you look at the airflow numbers on a bep there not far from a 20g maxed out.

Now if you want to step up to a big boy set up and dont mind letting your dsm stuff go then going full t3 is the way to go. I have personally seen 585 awd whp on an hx40 in a full t3 housing on meth.

I run a 12 cm divided t3 holset exhaust housing on my set up with a custom downpipe. I do not have any dyno number but going from the bep housing its night and day. The hx40 has been proven over 600whp. If your looking for a pump gas power house your not going to find a better hp per dollar chasing after some ball bearing turbo. If you think your going to make 400whp on a 16g easily I think your in for a surprise. e85 is awesome but airflow is still airflow at the end of the day. In a good flowing holset set up you should have no problem making 450 on pump gas. Please correct me if im wrong.

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its not that I like keeping my dsm stuff its just that I just finished this car like a month or so ago.

I have an aftermarket cast manifold and I had to fab a downpipe with external WG. Id hate to change a setup in so little time. (money loss is obvious reason)


and I dont think it will be that complicated to get the e316g to get 400whp.

I was logging 40-42lb of air on a very rough tune. the airflow is there so all I need to do is make full use of it.

crash89 said:

I personally have a buddy around town to made 640+ awhp on the .55ar housing on an hx40.. Im betting the people tuning your car suck ass.. Best advice would be to do a lot of reading and video watching and learn to do it yourself.

My first time tuning my car ever was on my twin scroll hx35 set up on 93oct pump gas. At ~25 psi Im seeing up to 53lb/min airflow. Which roughly translates to 430whp.

E85 would be best I would say. Very easy to make horsepower and it loves timing. And you're right when I was dialing in my car Id feel it pull a little bit until I was just over 20psi it started to put me in the seat.

Click to expand...

its not that it cant make the power. Im saying it cant make the power at low boost.

Go ask your buddy how much psi his running im willing to bet it way above 30. im no expert but at that numbers id guess his pushing 37-40+ psi

and I dont have a tuner. I dont have an hx40. I have a e316g looking to upgrade to get 450whp.

and you are aware that the twin scroll flow allot more than the mitsu .55 housing right?

dsmcurse said:

Hx40 is a beast, I'm not sure what the hell you guys are talkin about low numbers? Over a year ago I dyno'd 505awhp at COBB TUNING SURGLINE using a hx40 on pump gas at only 29psi. Ill be more than happy to post dyno paper. That same day I got 505 my friend alex (aka boostdriven) dyno'd 580awhp and agin this was on hx40. We've each done are fair share of tricks since then and we both still use pump gas and we both still use hx40. Right now I would bet my balls on a choppin platter that I could clear 550awhp on a mustang dyno right now today with a hx40. My friend would easily clear 600, on a hx40.... How the hell do u come up with low numbers?

Click to expand...

whats your mod list? and this is on a bolt on mitsu .55 housing?


and the numbers are from the link i posted above where people posted their dyno and timesheets numbers

BEP is restrictive Landspeed even contradicts himself by stating high back pressure.

but being restrictive and making HP are two different things, you can still make decent numbers, you just may not get the most out of a holset in a BEP housing

The Holset is a great turbo, but the .55 a/r housing is NOT the best way to go with it. My set up was on an extrude honed stock 1g intake and FP exhaust manifold. I used an Aeromotive 340 and 1150cc injectors with 110 octane.