Highest WHP S14 SR + Bolt-Ons?

[CoupedUp]

I was curious what the forum trollers of NicoClub.com think is the highest Wheel HorsePower attainable out of an S14 SR20DET with:

-Stock Long Block-Stock Ignition and Coils-Stock Injectors-Stock MAFS-Stock T28 @ 13 PSI-Megan Manifold-Elbow Back Exhaust-FMIC(21"x9"x2.5" Core, 2" Hot Pipe and 2.75" Cold Pipe)-Fidanza Flywheel

Why don't you guys throw some guestimates out there and give me a feel for the power I should make.

I understand this has been asked quite few times, but given the numbers I got out of my last dyno pull on a post MAF pre-turbo intake leak and inability to rev past 3500 RPM. I think most peoples SR "Standards" will be out the window. This is speculation anyhow.

EDIT: DYNO'D!

I dyno'd this past weekend, made 272.3 WHP @ 13 PSI on a Dynapack 4000 Chassis Dyno. Which is roughly 294 WHP on a Dynojet.

It was at 10.3 AFRs at the beginning of Full Boost notice the torque dip. It then leaned out to 11.4 AFRs and slowly started to lean out to 12.2-12.3 at the end of the pull.



Thanks for looking.

With a tune I know I could hold that torque steady at the beginning of full boost and make over 300 WHP.

Modified by CoupedUp at 12:56 PM 4/6/2008

Modified by CoupedUp at 12:57 PM 4/6/2008 EDIT: DYNO
Modified by CoupedUp at 12:59 PM 4/6/2008

[Emperor_Tha]

how much are u running? A old friend made like 260 whp s14 in a s13 but it didn't have a/c or p/steering. It had safc tune.

[CoupedUp]

What kind of torque did your friend get?

[Emperor_Tha]

Idk it was a few years ago, it was like 250 260 ish torque if I remember

[Tulsa_S-13]

I think I could throw some pretty good guestimates out there

[CoupedUp]

I think I could throw some pretty good guestimates out there

Shush you!

[Emperor_Tha]

Oh yeah this was back when sunoco still had ultra 94 octane

[CoupedUp]

They still do in Michigan and Ohio for sure.

[ryan15]

I know a guy who made a little over 250 at the wheels and 300 torque on a stock redtop sr 13lbs of boost, fmic, turboback exhaust and dyno tune on power fc... So you have potential.

Ryan

[GRIPPY]

You can max it out at a little over 300hp when done right. But most dynos i have seen were pushing 280-290 at about 18 psi.

[Emperor_Tha]

Wow on stock 370cc injectors? Possibly upgrade to s15 injectors

[jr_ss]

I would think that with pretty much stock everything except the BPU's you'd see around 275hp with a tune... Without a tune, I wouldn't put it over 250hp.

[CoupedUp]

Wow on stock 370cc injectors? Possibly upgrade to s15 injectors

Yes, stock 370cc injectors. I am upgrading in about 3 months as well as engine management.

Quote »I would think that with pretty much stock everything except the BPU's you'd see around 275hp with a tune... Without a tune, I wouldn't put it over 250hp.[/quote]We will see. .

[240_SeX]

You can max it out at a little over 300hp when done right. But most dynos i have seen were pushing 280-290 at about 18 psi.

370cc + 18psi = easy axcess pistons

[Emperor_Tha]

so is 370cc injectors safe for 1 bar psi with the s14t28?

I had a first gen eclispe gsx with stock 450cc with tdo5 Evo iii turbo at 17 psi and the afr was 11.5 or closed to that with a blow through maf

[240_SeX]

so is 370cc injectors safe for 1 bar psi with the s14t28?

I had a first gen eclispe gsx with stock 450cc with tdo5 Evo iii turbo at 17 psi and the afr was 11.5 or closed to that with a blow through maf

No, one bar is 14.5 psi i wouldn't run more than 10psi with 370's

[S14toRPS13]

so is 370cc injectors safe for 1 bar psi with the s14t28?

Not the smartest thing to do, but my nephew normally runs 14 psi on 370cc with a S15 turbo. He's even gone as high as 16 psi. I wouldn't recommend it, but between the two of us. We've ran the sh*t out of that motor for about 6 years now. It's still holding up and running strong though.

[jr_ss]

With an FPR and a gauge, setting your base psi to 50lbs would net slightly more fuel. But, that's not something I'm wanting/going to do with mine. I run 12/13psi on my T28 daily, haven't had any problems so far, but knock on wood.

[CoupedUp]

Dyno'd. Dyno graph is in the top of the thread.

[garagelu]

You say that you would make 294 WHP on a Dynojet. How do you come up with that? Usually dynapaks read higher than dynojets.

[Emperor_Tha]

Nice number. So when does the vvt kicks in, 3.5k or later and can u notice it?

[CoupedUp]

You say that you would make 294 WHP on a Dynojet. How do you come up with that? Usually dynapaks read higher than dynojets.

Dynapaks, read lower. In my personal experience.***

The average difference is roughly 8% and sometimes upwards of 10%. 272.3 x 1.08 = 294.0*.

Every car that was tuned at Defined Autoworks on their Dynapak, generally put down 8-10% more on a Dynojet at dyno events.

Nice number. So when does the vvt kicks in, 3.5k or later and can u notice it?

I can't notice it because I haven't driven a S13 Red or Blacktop in a long time. Also, I'm pretty sure that VTC kicks on at low RPM and turns off around 5000 RPM. Its for low end power. I remember reading that it kicks off at 5400 RPM. Also, the VH45DEs VTC kicks off at 4800 to help the low end power.
Modified by CoupedUp at 4:25 PM 4/6/2008

[ryan15]

Stock fuel pump?

[Emperor_Tha]

looks like u can make more hp if u have more rpm. The power band hasn't drop yet.

[CoupedUp]

Stock fuel pump?

Walbro 255.

[ryan15]

Sweet man, my mods are pretty much identical except ecu flash, and 500cc injectors, im a FMIC and fuel pump away from being on the same page, cant wait to be able to turn the boost up!

Great numbers dude!

Ryan

[Shocker]

Nice to see someone laid down some decent numbers that day!

[mRodiek]

nice numbers mantime for an intercooler & bigger turbo soon crank up tthe boost!!

[david200095367]

nice numbers mantime for an intercooler & bigger turbo soon crank up tthe boost!!

looks like he already has a fmic.

[Tulsa_S-13]

Not sure when the next time Sean will chime in will be, but yes he is already rocking the FMIC.