How much HP does a 3" turboback add???

[Irks]

Originally posted by Ricardo

I got a custom 3" exaust welded in a shop, K&N Air Filter, Dejon Tools Intercooler Piping (Upper, S and Lower pipe), 1st Gen Eclipse Blow Off Valve, AGP T28 Turbocharger ported @ 16psi, Walbro 255LPH High Pressure Fuel Pump, NGK Spark Plugs & Wire Set, 2 1/2" intake pipe from Dejon Tool and I believe I'm probably running 250-260hp, I'm going to dyno soon. I raced a friend with same turbo and we were together and he got a 5spd, full exaust too and some other mods so there's nothing wrong with my car.

If you're running a 255 pump with no fpr, you're running rich, and losing power. Does your car feel really smooth? Even with my 190, it took the ecu about almost a month to readjust to the fuel flow, and a 190 doesn't overrun the stock fpr.

 

[candela]

I said 20whp not 30whp BTW... =)

 

[Ricardo]

Originally posted by Irks


If you're running a 255 pump with no fpr, you're running rich, and losing power. Does your car feel really smooth? Even with my 190, it took the ecu about almost a month to readjust to the fuel flow, and a 190 doesn't overrun the stock fpr.

All I know is that I'm getting s-afc soon so no need for fpr. Also, I ran with a manual 2g w/ same turbo and we were head to head, he didnt have the fuel pump mod thou.

 

[candela]

All I know is that I'm getting s-afc soon so no need for fpr. Also, I ran with a manual 2g w/ same turbo and we were head to head, he didnt have the fuel pump mod thou.

:laugh:

 

[dikbutkiss]

YEAH!

 

[Ricardo]

ok first of all candela does not get to make fun of me because he has a civic too

second dikbutkiss, you don't even have a dsm, what the hell are you doing here ?

and finally, I don't know what you guys thought it was so funny about my post, maybe I used the wrong words but then again English is not my first language. I was just trying to say that my money is better invested on a s-afc then fpr and that I raced a manual GST (his username is FourG63 97GST) and we were pretty much at the same level. Just because our gear ratios are different I would get ahead of him for a few secs then he would get ahead of me, we went like this all the way from ~15mph to 110mph.

 

[GRNDSM]

The power level will depend on your other mods and most importantly on the boost level at the time in question.

With stock turbo and 10 psi, you will probably see around 20 hp gain. But with the same turbo and 20psi, you can get as much as 40 extra hp (if not more) by freeing up the exhaust. Anyone quoting you any numbers with out qualifying this, is probably trying to brush you off by telling your what you want to hear…

Another FAQ, is how much you would gain with 3” system vs. 2.5” system. Once again, it will greatly depend on your boost level. Sock turbo/10psi car will see no measurable difference between those two exhausts. While on mid to low 11 sec car there is around 20-30hp to be gained by going from 2.5" to 3".

Heck, I will go as far as saying that 300hp car (mid 12’s on AWD) will not have much difference between those two systems. But I know that I am in minority with that opinion…

Leon
RR

 

[Ludachris]

The reason why you won't get many answers to your question is because these are not Hondas. We almost never bolt on "only" an exhaust, and we don't keep track of what each individual part gives us in terms of power - mainly because most parts don't give much power unless they're used together with another part. It would be ludicrous ( ) to bolt on a turbo-back exhaust and not add a boost controller on a turbo DSM. Even if we did, these are turbocharged cars and they almost always will react differently from one car to the next. There is no true bible of how much power each mod will add on a turbocharged car, so we mainly go by collective results. I can give you a rough list of what you'd need to gain about 300hp... that's how most DSMers do things. So don't get offended when people won't answer your question, you're just asking for a statistic that we don't keep.

Check step 7 on this page:
http://www.dsmtuners.com/forums/showthread.php?s=&threadid=16935

 

[RetardedAWD]

Haha mine runs so rich right now that it shoots a 6ft flame if I touch on the rev limiter..
I have no fpr. I could only imagine if I leaned it out a bit and get a rough tune off of an EGT probe.

 

[candela]

"ok first of all candela does not get to make fun of me because he has a civic too

second dikbutkiss, you don't even have a dsm, what the hell are you doing here ?

and finally, I don't know what you guys thought it was so funny about my post, maybe I used the wrong words but then again English is not my first language. I was just trying to say that my money is better invested on a s-afc then fpr and that I raced a manual GST (his username is FourG63 97GST) and we were pretty much at the same level. Just because our gear ratios are different I would get ahead of him for a few secs then he would get ahead of me, we went like this all the way from ~15mph to 110mph."

Im not trying to make fun of anyone here dude. What does Honda have to do with making fun of anyone? Thats not a very thought off statement... I laughed because your statement really made no sense to me personally. You said you ran with a 2g with the same turbo.... what relevance does this have to how much HP a turboback exhaust adds? Then you said that your getting an s-afc so theres no need for an AFPR, which also makes no sense. I do agree with you, that I would also get an afc over the FPR in your situation, but an afc sure will not solve the fact that your 255 out runs the stock fpr.... it simply doesnt have the adjustability nor function of regulating fuel pressure. So again I wasnt making fun off you, just a friendly little smile.

Oh and why is it that someone with a 240sx cant be on this site. Is it wrong for him to come here and check stuff out. Read his posts, he doesnt go around bashing anyone so he has just as much right as anyone else on this board Have a nice day

Austin

 

[krott5333]

Yeah, i dont have a DSM either. ahhhhhhh, but i want one.

 

[Ricardo]

Yea its all good man, I just cant take anyone making fun of me, I'm just like that, had too much with #@%#@%#@%#@%#@%#@%#@%s talking behind my back and stuff like that but anyway this has nothing to do with this.

I see no problem with civics, theyre great daily driving cars, but theyre not race cars
240sx on the other hand are good cars I like them a lot, but the 300zx is my fav

alright take care man.

Originally posted by candela
"ok first of all candela does not get to make fun of me because he has a civic too

second dikbutkiss, you don't even have a dsm, what the hell are you doing here ?

and finally, I don't know what you guys thought it was so funny about my post, maybe I used the wrong words but then again English is not my first language. I was just trying to say that my money is better invested on a s-afc then fpr and that I raced a manual GST (his username is FourG63 97GST) and we were pretty much at the same level. Just because our gear ratios are different I would get ahead of him for a few secs then he would get ahead of me, we went like this all the way from ~15mph to 110mph."

Im not trying to make fun of anyone here dude. What does Honda have to do with making fun of anyone? Thats not a very thought off statement... I laughed because your statement really made no sense to me personally. You said you ran with a 2g with the same turbo.... what relevance does this have to how much HP a turboback exhaust adds? Then you said that your getting an s-afc so theres no need for an AFPR, which also makes no sense. I do agree with you, that I would also get an afc over the FPR in your situation, but an afc sure will not solve the fact that your 255 out runs the stock fpr.... it simply doesnt have the adjustability nor function of regulating fuel pressure. So again I wasnt making fun off you, just a friendly little smile.

Oh and why is it that someone with a 240sx cant be on this site. Is it wrong for him to come here and check stuff out. Read his posts, he doesnt go around bashing anyone so he has just as much right as anyone else on this board Have a nice day

Austin

 

[candela]

Yea its all good man, I just cant take anyone making fun of me, I'm just like that, had too much with #@%#@%#@%#@%#@%#@%#@%s talking behind my back and stuff like that but anyway this has nothing to do with this.

I see no problem with civics, theyre great daily driving cars, but theyre not race cars
240sx on the other hand are good cars I like them a lot, but the 300zx is my fav

alright take care man.



i betcha my civic is faster than your dsm Also that 240sx is my brothers as well Anyway lets not get into any flame wars or anythign here

Austin

 

[fiercetalon]

Ok, back to what the thread is suposed to be about.....I'm going to say you can get 20whp or 30 but I'm not going to say you can't..from what I have picked up over the past few years....every car and exhaust system will react differently. Either way, you are looking at a good gain!

 

[DeezNutsForYou]

hey ricardo maybe you should have found a 5spd instead of that a/t, your car would be a lot faster.

 

[Ricardo]

Originally posted by DeezNutsForYou
hey ricardo maybe you should have found a 5spd instead of that a/t, your car would be a lot faster.

like I said, I ran against a 5spd with same turbo and we were pretty much head to head and besides the auto transmission lasts longer than the manual tranny when dealing with bigger turbos and I'm putting a L2R soon enough, my plans are first FMIC, injectors, 97+ bumper and headlights and then its day will come, my car will be a highway beast

I tried to find a manual when I first bought my car by the way, but couldn't find a decent one. It doesn't make that much of a difference anyway, especially after I put a shift kit on it

 

[Ricardo]

Originally posted by candela

i betcha my civic is faster than your dsm Also that 240sx is my brothers as well Anyway lets not get into any flame wars or anythign here

Austin

Give me the money you spent on your no-torque civic to make it faster than my car, I'll eat you for breakfest

 

[candela]

I dont have to, thats whay I have my dsm

 

[Ricardo]

Originally posted by candela
I dont have to, thats whay I have my dsm

good choice

 

[candela]

:laugh:

 

[4G63GS-T]

well i know that the thermal R&D 3" cat --> adds about 20HP.

 

[Bohrn]

It doesnt make much of a difference?? WTF??

The auto cars have weaker cams, smaller injectors and smaller turbos!!

I know you changed your turbo, but still the injectors are alot smaller, and the cams are weak, designed for low end torque to make the car feel quick around town, and to match the smaller, quicker spooling turbo.

 

[greyforestgst]

Originally posted by candela
240hp for those mods isnt really impressive to me at all tell you the truth. My brother 240sx dynoed 250whp with a FMIC, exhaust and fuel pump thats it!

either your brother has a fmic on a naturally aspired car, or he has a whole shitload more mods and a turbo that you forgot to include.

 

[greyforestgst]

Originally posted by quickersol
here are some whp numbers from turbo magazines dyno cell:

190.6 baseline 4g63
201.8 k&n filter
215.5 exhaust
220.7 downpipe
251.3 spearco fmic
259.9 high flow cat
271.5 teamrip mass
299.1 16g turbo
307.2 afc
319.8 mbc
327.2 550cc injectors
339.3 cower cams
342.4 crane ignition
355.2 t3/t4 at 15psi
378.1 t3/t4 at 18psi
397.3 venom intake mani
417.3 ported head at 19psi
428.2 garrett gt3040 turbo
437.8 intercooler chiller kit

weird #@%#@%#@%#@%. fmic before a manual boost controller? 300 horsepower before a manual boost controller? #@%#@%#@%#@%, guys, its 50 bucks.

that is damn impressive though. would love to see some nitrous introduced into the equation.

 

[Ricardo]

Originally posted by Bohrn
It doesnt make much of a difference?? WTF??

The auto cars have weaker cams, smaller injectors and smaller turbos!!

I know you changed your turbo, but still the injectors are alot smaller, and the cams are weak, designed for low end torque to make the car feel quick around town, and to match the smaller, quicker spooling turbo.

Uhm hello ??? I'm driving a 2G, not a 1G, 2G's autos are all the same as 5spd, yes even injectors, even ex. manifold even everything except the tranny. k thx.