how much hp gain from small to bigger intercooler
 

say you got just 8psi or so and you got a small DSM size intercooler and if you upgrade to something like greddy type 31 etc, how much would you gain? this on a Dseries making no more thna 165whp or so

Re:how much hp gain from small to bigger intercooler
 

No where near worth the amount of the IC. A DSM IC is MORE THAN ENOUGH for 165whp and 8psi on a 1.6L.

Remember that the DSMs made 190hp in stock forum at 12psi and they really don't see very good gains from an IC at all, unless they have the boost jacked way up and a bigger turbo.

Re:how much hp gain from small to bigger intercooler
 

the bigger intercooler would create more lag but would also cool the incoming air much more, and would allow you to increase boost to make up for the differance.

Re:how much hp gain from small to bigger intercooler
 

Not true. DSM's have a big increase of horsepower when upgrading intercoolers. Even with a stock turbo and around 15 lbs of boost.
http://www.turbomagazine.com/tech/0209tur_dynocell/
they have the vr4 with 14b turbo gain 30.6 hp and 32.3 lbs of torque on a spearco unit. i think on a honda it will still increase hp maybe not as much.

Re:how much hp gain from small to bigger intercooler
 

you will NEVER see more power from an intercooler unless these things are there

1. going from a SHITTY one to a good flowing one, rare
2.boost pressure is increased
3.you have the current one maxed out and it can't flow the capibility that you need.


in this situation, or any other low boost situation similar, you will see NO power gains, and more than likely no other gain or loss what so ever.

there will NOT be more noticable lag, considering the DSM flow less than the type 31, and the type 31 is a more efficent design


don't listen to ppl that THINK they know, cause they heard/read it somewhere

Re:how much hp gain from small to bigger intercooler
 

mabey this will help you out.

https://www.homemadeturbo.com/forum/...threadid=11381


the faq is amazing! ;D

Re:how much hp gain from small to bigger intercooler
 

You should also note that the VR4 DSM has a different IC that isn't as good as a 1G DSM IC ( I know I have 2 1G DSMs and I VR4 DSM IC ).

Vs using the VR4 IC I choose to run my car non-IC'd for a week b/c it just didn't look like it was worth the hasle to run piping for it.
Also keep in mind that the person that asked the question wasn't running 15psi like the VR4, he's only running 8psi which is almost half...

I also have to agree that the amount of lag that an IC can create is overrated, its really hard to notice a 200rpm increase in lag with a fast spooling turbo.

Re:how much hp gain from small to bigger intercooler
 

Huh.I allways thought that you could gain h.p. from a bigger intercooler couse you would be getting better cooling effficiency.This would of course be upgrading from a side mount to a front mount.The efficiency of the I.C depends on the air flow that cools it and we all know that cooler air makes for better combustion wich makes more horse power.With a front mount you also get the help of the radiator fan wich sucks cool air through it to help more than a side mount.The side mount in my Passat doesnt even have good air flow design.That thing gets really hot couse theres really no air that moves through it where its at.I drilled some holes in the plastic fender liner to inprove air flow but I dont know if that helped.

Think about it,a 2 row alluminum radiator will cool better than a stock plastic single row radiator.Of course a radiator wont make h.p but an intercooler is a radiator for the cahrged air.

Re:how much hp gain from small to bigger intercooler
 

We were speaking of the specific car he is speaking of. Now a 12+psi stock VW that has a smaller turbo than it really should ( not sure about VWs ).

Of course 2 ICs that have the same flow and effency, but one front mounted vs the other side/fender mounted will show the FMIC to be better, but the VWs and DSM cars rely on a lot of power to make them fast ( basiclly more cubic inches and more boost ), where a honda always has its light weight.

A 1.6L Sohc car at 8psi is a totally different deal than a 2.0L Dohc car at 15psi.

Re:how much hp gain from small to bigger intercooler
 

I know what he was asking.My point was that any car will benefit from cooler,denser charged air weather turboed or not.It wouldnt be a drastic amount but in small engines every little counts.Im going to be getting a C.C intercooler just for the sheer "bling" factor ;D

Re:how much hp gain from small to bigger intercooler
 

dam you just killed my reason to upgrade my DSM intercooler to a font mount. Thanks for the info. I guess I should got for some type of extra cooling co2 or water.

Nick

Re:how much hp gain from small to bigger intercooler
 

ahhhh!!! what is this nonsense, intercoolers add lots of power, after i went from my wussy saab smic that was mounted in the front to a huge front mount i felt a HUGE difference, if you can actually feel a difference in an upgrade then its worth it. johnnyracecar.com, i got one from him for $250 shipped, and he sometimes does group deals with HMT.com

Re:how much hp gain from small to bigger intercooler
 

Different engine, different boost, and different IC..

ON HIS SET-UP ITS NOT A VERY WORTH WHILE OR MONEY UPGRADE, NOT THAT 300hp CAR WITH A T-25 ISN'T GOING TO SEE A GAIN, ONLY HIS SET-UP !!!

DSM IC $45shipped
GREDDY FMIC $$$$$$+shipping for 4.5hp ???

ONLY ON HIS SET-UP !!!
NOT VWs, NOT OTHER HIGH BOOST/HIGHER HP HONDAS, DSMs, BUICKS, ACCORDS, SKYLINES, GEOs, OR ANYTHING ELSE, BUT THE SET-UP HE SAID.

Lets say right not his after IC temp is 100* on a 95* day with the DSM IC, is it really worth the $$$.$$ and time to get another IC ?

Re:how much hp gain from small to bigger intercooler
 

---- 89dx mellow the ---- out.He is asking for opinions.You gave yours and I gave mine.

45$s shipped for a DSM?Yeah couse the DSM guys have found them to be inneficient!In my mind the DSM is an inneficient piece of ---- so the answer would be yes.Yes it is worth it!THATS MY ------- OPINION!!!

Re:how much hp gain from small to bigger intercooler
 

I wan't getting PO'ed b/c anyone was dissagreeing with me ( that happens all the time ) I was just tired of seeing "Well, my friends 45psi race supra gained 50hp from going to a bigger IC"...

I bought 2 1G dsm ICs for my stealth TT b/c they are bigger than my stealths factory sidemonts, and the 2nd fastest stealth in the world uses factory ICs, not even the bigger DSM ones.

But I guess its all about my wallet, a FMIC would be better, just not worth the cost IMO... Then again I'm starting with a Starion IC in the first place...

Re:how much hp gain from small to bigger intercooler
 

im only running 7PSI and bigger ic made a difference in the summertime, and i have a T-3 on a b16a2(99 si) and everyone said that t-3's run so much hot air for my car and i got a big ic and its just awesome pull all the way up to 8000 RPM, but the only way to tell is to try, and big front mounts look cool.

Re:how much hp gain from small to bigger intercooler
 

Sorry to jump right into the fray, but it was never stated about the location(s) of said ic's, and the fact that the amount of piping and bends has some play into whether or not an increase is seen. If you can run a shorter set of pipes to the most efficient ic, then you are also reducing lag that might be created.....not to mention increasing the cfm's possible. I am currently contemplating moving my currenc ic just for that reason.... too long of a pipe system.

my 2 cents

Re:how much hp gain from small to bigger intercooler
 

Hehe, off topic but my IC pipe from my turbo to my starion IC is about 6inches total !!! Yes it took a little hacking, but that's OK, its an ugly 89' civic.

99TurboSi if I remember right you are running a .42 compressor housing right ??

High flow motor with low flow turbo = Ic needs to be better. Like a .60/.63 60-trim wouldn't need to have a really great IC as much as a .42/.48 would, b/c the .42 is heating the air a lot more.