sr20det dyno - 249whp/255tq - stock setup

[mynismo]

redtop sr20det, greddy profec b spec ii (15psi), 3" turbo outlet/downpipe/test pipe/exhaust, greddy airnx/pullies/fmic, mines ecu, walbro 255lph, ngk iridium's, spec stage 3, fidanza flywheel. other than that it's all stock.

my guess is that without the flywheel and pullies it'd put out about the same number, but i don't think the tq and power figure would come as soon as it does.

250 ft-lbs @ 3500rpm ROCKS

i think there's a little power that's lost down low as well as tq because its not getting enough fuel. i bet if i hooked up an afc i can squeak it up to 260-265whp with an even higher tq number.

[pgt892]

That's awesome, congratulations.

[Cyberkreig]

Nice numbers but your t25 wont live long, trust me. I put down 250.3 on a similar setup. Dynoed by Backstreet performance actually.

[chickentendah]

Nice numbers but your t25 wont live long, trust me.

Mynismo those are some very exciting figures . Well done!

Cyberkreig, please explain what brings you to this conclusion of premature turbo failure. What makes the T25 die faster when you run it at 15psi (or anything from the intended 7psi)? Sorry, please enlighten me since I'm not very familiar with turbocharger science!

[240Kuminachu]

Sick numbers man, Im jealous. I need a boost controler. I bet she scoots. Hows the tracktion up there? Lots of Love.

NISSAN POWER!

[Cyberkreig]

Mynismo those are some very exciting figures . Well done!

Cyberkreig, please explain what brings you to this conclusion of premature turbo failure. What makes the T25 die faster when you run it at 15psi (or anything from the intended 7psi)? Sorry, please enlighten me since I'm not very familiar with turbocharger science!

Same thing that kills every moving mechanical part, friction. Think about how much faster that little compressor wheel has to spin to create 15psi. i dont have hard facts honestly. Is it 30,000 rpm? 50? 100? Anytime you spin metal against metal you create heat, friction and wear. The guys at JGY customs suggested that at 15psi you have a max of 12 months life on a healthy t25.

[s13sr20chris]

the previous owner of my engine boosted 15psi and overheated the engine pretty bad. turbo is still good with very minimal shaft play. i tryed to turn it down to 13 when i installed the motor. oops, its an air bleed boost controller not a ball valve. i just turned it up. so i drive around on 20psi for a day and then turn it down to 13. stupid i know but it felt great. now i am rebuilding the motor after cyl 4 slowly died of ring failure. i attribute everything to the previous owner overheating it and me not fixing it before i installed it.

oh yeah, nice numbers. i am coveting that midrange torque.

[Nismo_Freak]

Awesome... makes me wonder what I'll put down using a really similar setup but with a few extras.

- Apexi Filter- SPL Exhaust Manifold- SPL 02 Housing- Z32 MAF - Enjuku Racing Intake Pipe- Blitz 3" Downpipe- 3" Test Pipe- 5Zigen Pro Racer A-Spec Exhaust (sold the Nur Spec)- Enthalpy Tuned ECU- Blitz FMIC- Enjuku 2.25" Hotpipe

[B.L]

i think there's a little power that's lost down low as well as tq because its not getting enough fuel. i bet if i hooked up an afc i can squeak it up to 260-265whp with an even higher tq number.

I get 327 ft-lbs at 4250rpm and 265whp with 11.5 a/f on stock s14 T28(16psi) so yeah you can get a bit more out of your setup

[Rosco]

I also have a mine's ecu for my redtop (mines vx-rom ecu). How is it? I mean what are the specs on that? Like no rev-limiter and such....srry to be so vauge, but I know little to nearly nothing about mine.

[RMiller]

I get 327 ft-lbs at 4250rpm and 265whp with 11.5 a/f on stock s14 T28(16psi) so yeah you can get a bit more out of your setup

Do you have stock exhaust? Or a stroker motor? Weird cam combo? That's some crazy torque.

[Cyberkreig]

those numbers seem mis-matched to you too? Hp seems low.

[Nismo_Freak]

those numbers seem mis-matched to you too? Hp seems low.

Yeah ... at his peak torque point he's making 264.6whp and we know SR's don't make peak HP until the 6000 mark usually.

It's possible the 327 is a base tq. number and the 265whp is an actual wheel number. Would seem to make sense.

327 x 0.85 = 277wtq.

265whp / 277wtq. sounds perfectly normal.

[B.L]

Whoops sorry

I made 386nm at the wheels.(285 ft-lbs)The 327tq was the the flywheel number

[mynismo]

thanks for the comments guys..

Awesome... makes me wonder what I'll put down using a really similar setup but with a few extras.

- Apexi Filter- SPL Exhaust Manifold- SPL 02 Housing- Z32 MAF - Enjuku Racing Intake Pipe- Blitz 3" Downpipe- 3" Test Pipe- 5Zigen Pro Racer A-Spec Exhaust (sold the Nur Spec)- Enthalpy Tuned ECU- Blitz FMIC- Enjuku 2.25" Hotpipe

i've got just about the same exact mods, but you've got a maf and enthalpy over me... im jealous you actually paid $500 for a stock tuned ecu? i wont spend that much until i get a turbo upgrade

im turning boost down to around 12-13 psi, since it only holds 11.5 or so on topend. i want it to last at least another 6-8 months before the gt2871r goes in

i had a blitz ecu in my old car, and compared to the mines..... the mines is complete crap i dont think it does anything. all it does is raised rev limiter (7700) and speed cut. it said slight ignition timing and fuel maps but i dont feel any of it. and you would think if they did tune it for 14psi that i would be quite a bit richer from 3.5k on. i would love an enthalpy ecu but its $$$

[Nismo_Freak]

thanks for the comments guys..

i've got just about the same exact mods, but you've got a maf and enthalpy over me... im jealous you actually paid $500 for a stock tuned ecu? i wont spend that much until i get a turbo upgrade

im turning boost down to around 12-13 psi, since it only holds 11.5 or so on topend. i want it to last at least another 6-8 months before the gt2871r goes in

i had a blitz ecu in my old car, and compared to the mines..... the mines is complete crap i dont think it does anything. all it does is raised rev limiter (7700) and speed cut. it said slight ignition timing and fuel maps but i dont feel any of it. and you would think if they did tune it for 14psi that i would be quite a bit richer from 3.5k on. i would love an enthalpy ecu but its $$$

Well I didn't pay the normal rate... but compare the following:

S-AFC II - ~$300 new- Works with MAF- Tune the fuel curve somewhat (have to tune it myself)

Enthalpy ECU - Even at $500 - Works with MAF- No Speed Limiter- Tuned Fuel Curve- Tuned Timing Curve- Rev Limit Reset to my specs- Retunes are cheaper than dyno time