Need some advice on my setup. S15 turbo (250whp)

[birdhou53]

Advice on my new setup and maybe comments would be greatly appreciated.

First of all. My goal is a setup with pretty good response and something that will be as reliable as possible. Probably 230+whp

This is what I already have:

S13 Blacktop SR20DETFidanza Lightened Flywheel (11lbs), Not installed yetCusco Motor MountsStock T25ARC SMIC3 Inch Exhaust/Downpipe/Test Pipe/Turbo ElbowHKS SSQVKoyo Aluminum RadiatorStock InjectorsStock MafWalbro 255lph Fuel PumpMine's ECU (Boost Up)Circuit Sports Stainless Braided Turbo LinesCircuit Sports S15 Turbo Adapter Plate

The last thing that I am going to need is my S15 turbo which I should be getting in the next 2 weeks. Hopefully. I was wondering if anyone here has an S15 turbo with a setup that is similar to mine?

My question is... what is the response like on the S15 turbo? When does it start to spool and when does it make full boost?

The main reason why I'm going with an S15 Turbo is because I want a Turbo that's BRAND NEW for peace of mind as well something that will be able to help me make more power in the future.

Here are some pics of the stuff that I got:





Anyways, please comment if you could. Thanks!

[cheapscheisst]

uh... what's with the smic?

[birdhou53]

What do you mean? Just showing you guys some parts from my setup.

[Shift_Tommy]

ditch the smic and go front mount.

[corey240]

uh... what's with the smic?

thats a nice car, but that sig is waayyy to big change it.

[cheapscheisst]

done

[partymonster 975]

well if your goal is only 230whp or a little more I'd ditch the S15 turbo and get the S14 T28, will be cheaper and it is ball bearing like the S15. Also if you want to you can spring for some S15 or other brand 440cc injectors and that should hold you till about 260-70 whp. I skimmed the list and the only problem is the SMIC, good brand but still. If you keeping it make sure your giving it as much air access as possible, like you can even drill holes on the bumper to get air flowing. Well you'll also need a Z32 MAF and an afc of some sort.

[cheapscheisst]

if you're only looking to make 230whp, that setup should be fine. just crank up the boost. just make sure the engine doesn't knock b/c you have a sidemount.

[redtop91]

T25 is plenty good for 230 WHP.

[cheapscheisst]

oh and as an afterthought you should think about buying an megan exhaust mani. they are dirt cheap (around $150) and can produce an extra 10-20 whp depending on your setup. plus you will spool a bit faster.

[partymonster 975]

oh and as an afterthought you should think about buying an megan exhaust mani. they are dirt cheap (around $150) and can produce an extra 10-20 whp depending on your setup. plus you will spool a bit faster.

Not saying ur wrong or anything but 10-20whp, are you sure? I heard that they add very little hp at all. Can anyone back this up, just wondering.

[cheapscheisst]

from what i've read, the mr ex. mani is very similar (performance-wise) to an extrude-honed stock mani, which is supposed to give those gains. i could be wrong though.

[brandonb012]

i didnt think it gave hp gains, just faster and better spool times

[9240sx]

You'll have aleast 230whp with that setup..Stock Turbo,Injectors,MAFS...And the ARC SMIC are good up to 14psi with a T25.Easy....I see no need to get a S15 turbo..I mean you have a Blacktop so your stock turbo cant be that old,Im sure it has lots of life left in it..Spend you money else were..LIke on a aftermarket headgasket and some valve springs and Rocker arm stoppers...Now thats peace of mind..

[cheapscheisst]

exactly... better spool times = midrange hp gains

[white90esex]

man if ur running the stock T25 crank the boost to 12 psi and thats all u need for 240-250 whp.

Stock mani is plenty good and the T25 spools so quick u dont need a fancy tubular manifold.

[birdhou53]

Hmmm, thanks guys! I've decided not to go with an S15 turbo anymore. So that means that I have quite a bit of spare money right now. I was wondering if you guys think it's worth going with the Greddy VSPL? I'm trying to weigh the pros and cons of going FMIC or keeping my ARC SMIC.

I know that the SMIC is lighter and also less obvious to cops and stuff.

Has anyone here gone from a SMIC to a FMIC? Did you notice any difference in response, power, more lag?

[JamesDaltonATP]

ive read that arc sidemount is quite a good intercooler. id say up to 300hp, you would have no problems with that piece.

[Dtek]

Tyrant Motorsports has some unbelievable intercoolers at great prices. The brand is Alchemy and their IC has some basic internal differences from the run of the mill Greddy, Garrett etc... Ask the proprietor what IC he runs on his big dawg street-class car.

[redtop91]

Has anyone here gone from a SMIC to a FMIC? Did you notice any difference in response, power, more lag?

The lag depends on the length of the charge piping. Response will be dulled slightly but 20 HP gains are with grasp with a front mount. Just buy an eBay special. No need for a flashy name brand FMIC here. Especially for 250.

[otterman]

Hmmm, thanks guys! I've decided not to go with an S15 turbo anymore. So that means that I have quite a bit of spare money right now. I was wondering if you guys think it's worth going with the Greddy VSPL? I'm trying to weigh the pros and cons of going FMIC or keeping my ARC SMIC.

I know that the SMIC is lighter and also less obvious to cops and stuff.

Has anyone here gone from a SMIC to a FMIC? Did you notice any difference in response, power, more lag?

With a FMIC running with very little boost (8psi) it might actually hurt you depending on the size of the intercooler. But if you plan on (and you should plan on lol) turning up the boost then you will be fine. Who races on low boost anyways?

[mrzabala]

I got dibs on your arc smic. email me at [email protected] Goodluck with your build, cant wait to see the results.

[cheapscheisst]

Bump for Megan on the bottom mount manifold. It definitly gained me 20+whp over the stock manifold. Took my trap speeds up a decent bit higher too. Went from 114mph (stock manifold) to 117mph (Megan manifold). No spool difference but definitly helped in the top end.

ok my bad. no spool differences but higher hp

[chicos240]

RedTop, My set up is a s14sr20 in a 95 s14. Bone stock. I have a question on FMIC's. I am reading your post and I want to make sure I understand it correctly. You are saying that for 250hp an ebay special is ok? Does that infer that if you want to make anything more than that you should go with a name brand FMIC?