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HX35 help!

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beendenied

10+ Year Contributor
384
11
Oct 2, 2010
Suffolk, Europe
Ok, so I've been thinking, and a Holset HX35 turbo is on the wishlist for me. And the first question would have to be where would be the best place to buy one or a kit if there is one. Also, of specific parts to make the turbo fit like the exhaust manifold, intercooler and such. I'm going to start gathering up parts for now, starting with an inline wally 255, a manual boost controller, afpr kit, injectors, probably at least 750 or 800cc. an ACT 2600, was also thinking about getting a new shortblock and start building it and transfering the head from mine, then drop the motor in within a weekend or so. So all in all, the turbo will logically be almost the very last thing that I acquire. Anything else that comes to mind is much appreciated and anyone that has done this already helps with specifics.

Will
 
a lot of people are happy with the holsets. i know they can handle a good bit of boost and are good for over 500hp. sounds like you have a pretty good start on your setup. what are you going to be tuning with? what are your goals? stock internals i think are good for about 500 hp as well.

theres a FS thread in the classifieds for an HX35 with a BEP (bullseye performance) housing. the BEP housing is a direct bolt on piece. if you want one for the cheap, you can go to cumminsforum.com (i think) and pick one up for like 200. those dodge guys sell those things like DSM guys sell 14b's and 16g's. where ever you get it though, you'll need a BEP housing on it though. as far fitting an intercooler, you shouldnt have any problem getting it to work with any intercooler. you just need a 90* couple. i dont know what size though
 
I've been told a '99 flashable ECU and DMSlink would be a decent choice for tuning. By the the housing that it needs, you mean the actual turbo? I'm pretty new and getting started on learning, I'm going to start checking stuff off the list this friday, payday! Yea, whil I was googling earlier, I noticed that there were a few for sale over there, but their site just doesn't seem as nicely navigable as our site is. But I will look ;-)
 
Well you're half right.

You don't NEED a BEP housing. That's just the route most take since it's the easiest since it bolts on in the stock location. Depending on what hotside comes on the turbo you can just use the stock holset housing and mate it up to a T3 manifold. If it's got a divided housing you can run a divided manifold and get even better spoolup.

And I'm pretty sure you'll need a '95 EPROM ECU for DSMlink.
 
You should do some reading in the Holset threads. The BEP housing is the turbine (exhaust) housing. If you look for good deals you can get the whole setup pieced together for 5-600.

I would recommend saving up for a divided manifold and keeping the stock Holset exhaust housing though. You'll have the potential for more power yet still have quick spool. I actually want to sell my bolton setup so I can do just that.
 
Ya I have 7 holsets sitting at my shop for sale right now. But I would recommend doing some major research into the turbos and the results people are getting.
 
Well you're half right.

You don't NEED a BEP housing. That's just the route most take since it's the easiest since it bolts on in the stock location. Depending on what hotside comes on the turbo you can just use the stock holset housing and mate it up to a T3 manifold. If it's got a divided housing you can run a divided manifold and get even better spoolup.

And I'm pretty sure you'll need a '95 EPROM ECU for DSMlink.

i figured id try to make it more cost effective since he didnt list his power goals. i know t3 manifolds can cost a pretty penny.
 
Just pretty much going to get all the parts, install and hope for the best on power, no specific goals, just quite a fast car to drive and going to keep the boost relatively lower to save on the turbo life.

What do you think would be a good estimate on bolt-ons, then the internals?
And as for the divided manifold, where would one find one LOL. And don't worry about California emmissions, if anyone is also from this car-aweful state, I've be taking care of that soon enough.

Definetly going for externally WG'd, and I suppose I'll have to go against what I didn't want and acquire a relatively large front mount for this relatively...well.. huge turbo, and I've noticed that fuel rails and intake manifolds are unnecessary to change out at first.

Thanks for the responses, I'll definetly be rockin a small dsmtuners sticker on my car eventually, and that's a leap for me, I don't even put Air force stickers or anything related on my car, and I'm in the usaf!! haha Ok, maybe on a window :)

As for the '95 EPROM, I'm assuming this is aftermarket, what do they usually go for. My gsx is a 95 if it matters. Forgot to reply to that comment on my last.
 
the price will just be determined on where you actually buy your bolt ons. for a set of eagle rods/wiseco pistons you're looking at about 750$, but there are a couple other options of brands as well. anything you can want as for as bolt ons, internals, and the like, you would wanna go to extremepsi.com. if you find the same product on another site that has a lower published price, they will price match you, and the handling fee is 7.50 per order (unless you purchase fluids), regardless of how much you spend. i know HAFE makes cast manifolds and have a place on there that can be tapped for an external gate. it looks stock, but has larger runners. if you're looking for a front mount, there's no need to go out and buy an expensive fmic. after all, it's a core, and aluminum piping. try xs-power.com. they have a big, nice full short route kit for $300 shipped.
seeing that your gsx is a 95, you have an eprom ecu. you can send it in to ecmtuning.com and get it chipped and socketed for a good price.
 
the price will just be determined on where you actually buy your bolt ons. for a set of eagle rods/wiseco pistons you're looking at about 750$, but there are a couple other options of brands as well. anything you can want as for as bolt ons, internals, and the like, you would wanna go to extremepsi.com. if you find the same product on another site that has a lower published price, they will price match you, and the handling fee is 7.50 per order (unless you purchase fluids), regardless of how much you spend. i know HAFE makes cast manifolds and have a place on there that can be tapped for an external gate. it looks stock, but has larger runners. if you're looking for a front mount, there's no need to go out and buy an expensive fmic. after all, it's a core, and aluminum piping. try xs-power.com. they have a big, nice full short route kit for $300 shipped.
seeing that your gsx is a 95, you have an eprom ecu. you can send it in to ecmtuning.com and get it chipped and socketed for a good price.

That sounds like an option, and yea, I've been on extremepsi for a few things, well looking at them until payday haha. I guess I could try that site and get a nice sized core, I know this turbo will need it too LOL. Good on the eprom, hmm, have any idea on how long it takes to get there and back? This is pretty much my DD, though I can definetely hoof it for a bit. Is that a seperated mani? I want to have room for improvement down the road and it would probably add a nice look.

And what is anyone's take on manual boost controller vs. electronic?
- Except for the fact that there's a substantial price diff. and one is mounted in the cabin.


Thanks!!
 
Just pretty much going to get all the parts, install and hope for the best on power, no specific goals, just quite a fast car to drive and going to keep the boost relatively lower to save on the turbo life.

If you read through the holset threads and look at the results you will find these turbos like a lot of boost, and can handle it with the right setup. On my old hx35, the turbo didn't start to wake up until 25ish psi. Before that it was a boring turbo. So do some more research!

Also, in my experience, getting all the parts and installing them all at once is a large undertaking and can lead to hard to diagnose problems. I suggest taking your time, installing one part at a time and going up from there. I would install your engine management first and turbo last, etc.

Make sure you don't skimp on the oil feed and drain that these turbos require!

What do you think would be a good estimate on bolt-ons, then the internals?
And as for the divided manifold, where would one find one LOL. And don't worry about California emmissions, if anyone is also from this car-aweful state, I've be taking care of that soon enough.

This could be anywhere from a few hundred to a few thousand. A divided t3 manifold can be bought from some of the vendors on this site, like Punishment racing, JMF, etc. They do run $800-$1300 though, plus to external gates, and a custom downpipe.

Definetly going for externally WG'd, and I suppose I'll have to go against what I didn't want and acquire a relatively large front mount for this relatively...well.. huge turbo, and I've noticed that fuel rails and intake manifolds are unnecessary to change out at first.

If you want to keep your boost low then a external is necessary, I would go external either way while you are at it. A good efficient front mount should be on the list also, look into Extreme PSI's kits.

No need to change fuel rail or IM, look at a good fuel pump, the biggest injectors you can afford (if you go with link) and some upgraded fuel feed lines (after the filter)

Thanks for the responses, I'll definetly be rockin a small dsmtuners sticker on my car eventually, and that's a leap for me, I don't even put Air force stickers or anything related on my car, and I'm in the usaf!! haha Ok, maybe on a window :)

As for the '95 EPROM, I'm assuming this is aftermarket, what do they usually go for. My gsx is a 95 if it matters. Forgot to reply to that comment on my last.

This is not an aftermarket part. You will send your stock 95 ECU to ECM Tuning to have socketed and have the chip installed for you. From there you re-install and install the computer application, and start reading how to use that powerful software, it is the best thing you can do for your car.
 
So the HX35 can mate to a t3 mani from punishment or other site? And I guess I could go with a higher psi so long as the turbo and engine an handle it ;-) And what I meant with the one weekendish install, I meant a new short block and transfer over stuff from the old motor, but as for now it will be pieced together for sure.
 
yes, it can mate, but those manis are expensive. you dont have to worry about the turbo handling a lot of boost man. those turbo diesel trucks are constantly running high boost, so 30lbs minimum is NO big deal for them. stock internals have been pushed to over 500 hp. also i noticed you dont have a wideband on your list of things your getting. you'll definitely need a good wideband. AEM UEGO is a nice one.

as far as boost controllers are concerned. i would go with a dual stage from turboxs. i think it's about 185 or so. it's a manual boost controller, but allows you to switch between two diff. boost settings from inside the cabin. if you want to run 15 psi then switch over to 25 psi, you just push/flip a switch and youre there. it's nice having that option. it can be done with an electronic one, but you're gonna pay out the @$$ for basically the same thing. a lot of FWD guys use it to help control traction, but it would be just as nice having it with your AWD.
 
Thats so much easier and cheaper with the manual controller with 2 different settings that can be changed where I drive LOL. And I'll get a separated mani(link would be awesom), ship my eprom, get boost/vacuum, wide band, coolant temp - stock is sooo precise haha, oil pressure, might be something I'm missing. Wally 255, lets say... 1000cc injectors, the fuel pressure regulator, braided fuel lines possibly, wastegate or two, new clutch, Front mount, and maybe slimmer fans, seeing how the huge HX fits in.

Any opinions on good bov's that arent wicked loud, I want it to serve it's purpose without telling everyone and their grandmother around me. The turbo and exhaust will probably do that already though haha.

Even though the turbo isn't going to be in till maybe next summer, It's still fun to setup the crib to wait for the baby. hahaha
 
Let's just say that they are two types of BOV's "Purpose Built" and "Built for Show". TiAL is a purpose built valve. They are designed to stay closed when told to stay closed and open when needed to open. They are definitely not designed for sound. I wouldn't say they are loud either, mine is quieter than my 1g bov on the same turbo setup at the same boost levels.

You have to think about what is happening. On a 1g valve you are forcing all the air out of a small hole which creates a lot of noise. On the TiAL, youve got much more of an opening to disperse the air that is leaving. Therfore at the same levels it will be quieter until you get to the point where your letting off more air than the 1g bov ever could...
 
Exactly what I want, I'll pass on the RFL haha, I may not fall under smog in california and the CHP can suck it, but that doesn't mean I need to draw anymore attention to myself. That's what the turbo will do in good time. Well, it's late in my day, I work nights, so I'll check back on here later today to see if there's a few more tips. And you worded the tial bov in a neat way LOL
 
as far as gauges go, i have the aem uego wideband, boost/vac, and oil pressure. oil pressure to me is a little higher on my priority list. not to say dont worry about your coolant temp. but i like to watch what is going on with the oil.

really any bov will be somewhat loud depending on how much boost youre running, and the load thats on it.
 
as far as gauges go, i have the aem uego wideband, boost/vac, and oil pressure. oil pressure to me is a little higher on my priority list. not to say dont worry about your coolant temp. but i like to watch what is going on with the oil.

really any bov will be somewhat loud depending on how much boost youre running, and the load thats on it.

Yea, oil will probably be second after the boost. I should have the oil sending unit relocation shipping at the end of this week actually LOL. Pretty much all the stock gauges that don't actually have numbers on them are booty, in my opinion LOL.
 
well as usual i see lots of parts and money being thrown around.

heres my recipe to success.

Holset.. good choice. do your research on which one u want.

injectors... 720cc is about right for a 500whp car. you wont get much more out of them, but tuning will be easier than with HUGE injectors.

EMS - link is dogshit. dont care what anyone says. if you are going to chip tune, then chip tune. Link IS NOT REQUIRED! over priced boolshit.

Real EMS - Only two options here in my book. AEM or Megasquirt DIYPNP.

I know the ms option is not terribly popular amongst the followers around here. But it works well, is cheap and allows TOTAL control over spark and fuel tuning. its a good system, esp for the price.

FMIC - i say cxracing on this one. just_intercoolers has about the best price on ebay. China INTERCOOLERS ARE ALL THE SAME!!!!! why dont people get this? xspower? china! dont pay more for the same shit that has been branded.

you can get a big core with all the 16g tubing, silicone couplers and tbolt clamps for about 230 bucks shipped off fleabay. For a regular street car, this option just cant be beat.

And remember, there are supra guys making 1000+ hp at the wheels using cheap ass ebay intercoolers.


dont believe all the hype! you dont have to spend 25k on ## 3000$ car to make it go fast. Believe it.


oh yeah, i got some denso 720's layin around if you want em :) i switched to fic 1050 and almost immediately regretted it.
 
well as usual i see lots of parts and money being thrown around.

heres my recipe to success.

Holset.. good choice. do your research on which one u want.

injectors... 720cc is about right for a 500whp car. you wont get much more out of them, but tuning will be easier than with HUGE injectors.

EMS - link is dogshit. dont care what anyone says. if you are going to chip tune, then chip tune. Link IS NOT REQUIRED! over priced boolshit.

Real EMS - Only two options here in my book. AEM or Megasquirt DIYPNP.

I know the ms option is not terribly popular amongst the followers around here. But it works well, is cheap and allows TOTAL control over spark and fuel tuning. its a good system, esp for the price.

FMIC - i say cxracing on this one. just_intercoolers has about the best price on ebay. China INTERCOOLERS ARE ALL THE SAME!!!!! why dont people get this? xspower? china! dont pay more for the same shit that has been branded.

you can get a big core with all the 16g tubing, silicone couplers and tbolt clamps for about 230 bucks shipped off fleabay. For a regular street car, this option just cant be beat.

And remember, there are supra guys making 1000+ hp at the wheels using cheap ass ebay intercoolers.


dont believe all the hype! you dont have to spend 25k on ## 3000$ car to make it go fast. Believe it.


oh yeah, i got some denso 720's layin around if you want em :) i switched to fic 1050 and almost immediately regretted it.

kawgomoo is right...except for link.

link is the best bang for the buck and so many people have success using it. do your research on it. so many people can vouch for it. it's more than you'll need and a ton of people can answer any questions you have on it.

you can spend 495$ on link, or $2k for a new AEM EMS. taking the AEM EMS over link sounds kinda hipocritical when you say someone doesnt need to spend a lot of money to go fast. that's why people do link.

then why not just put the 720s back in if you dont like the 1050s? doesnt make sense
 
For now I think I'll go with getting my eprom chipped and get link program for tuning. I don't see it costing 25k LOL, but by the very end I know it won't cheap, but I want it to be relatively reliable and last. And from what people have been suggesting here and there, is to get new fuel related parts because the history of them is pretty unknown, but thanks for the offer :p
 
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