spoolin93r1

just thought everyone might like to see the results. i have the sheets, but can't get them posted for a while. I made 303.2 hp and 283.3 tq SAE. My mods are dp/mp, Apex'i catback, Don't be a Rikki non-seq conversion, power fc, and a k&n in the stock airbox. I was running 1.02 bar or 15lbs for those of you who hate the metric system. It had absolutely no knock and running 12.5 air fuel all across the board. I didn't think it was too shabby at all. What do you all think??

KevinK2

The airbox inlet is more of a restriction than stock filter, based on my pressure drop measurements. With RB duct, or better yet ... other mods to box (search), you will get same power at 13-14 psi, with less turbo stress.

RX7Elmo

what was the ambient temp? I would think those numbers should be higher considering the amount of boost you were running. Also, the a/f is a bit on the risky side for my taste.

FstFD3SPOWER

Where ur dyno guy hook up RPm thingy to meassure rpm???
know what im talkin about?

spoolin93r1

the ambient air was 49.2 degrees, we had it pretty chilly in there, but my motor was averaging about 88 degrees celcius water temp during 4th gear pulls. the air fuel is about as harsh as i wanna get, i'm gettin a front mount, intake, and fuel pump soon, so i will dial it down to like 12:1. the rpm lead was attached to the front trailing spark plug wire, he had to squeeze to get it in there, but he managed

Dragonz818

Yeah I always figured the o2 should stay between 11.2 and 11.7 I always kept it near their.

Good numbers. I dont have a mp but almost the same mods and I made just ab out 280hp when I went on the dyno. I had about 250 tq I also still have sequential setup.

I have a question for ya. Did you ever have the mp on when running seq. If you did was their noticeable boost spiking?

spoolin93r1

i never had it running right with the sequential setup so i converted it. i never had the mp on there with the sequential. although on the dyno the boost was dropping off to like 12 lbs on the big end in 4th, so i figured with the power curve i have it's not bad at all

GoodfellaFD3S

iTrader: (213)

That's an interesting split between hp and torque. When I put down 337 awhile back w/my ported motor, I had less torque than you. Can't quite remember the value, but I know it was less than yours.

neevosh

You should be a little higher then that at 15psi. What type of dyno was this, a Dynojet? I'd expect at least 320RWHP with a midpipe. Get a bigger IC. The turbos aren't efficient at those boost levels and generate a lot of heat. And I would add some fuel. 12.5:1 is too lean to be running around at all the time. Keep in mind, the dyno doesn't put as much load on the engine as the street does. You'll be even leaner on the street.

rynberg

Your engine and turbos are hand grenades waiting to go off. You should never run an A/F ratio under full boost of higher than 11.5 on pump gas. Running the stockers at 15 psi is harsh enough but it's suicide with the stock IC. Also, you really don't have enough fuel delivery with the stock pump and injectors to run 15 psi. I hope this is not your daily driver setting.

You are running on the ragged edge and are asking for a rebuild (and new turbos).

Marshall

I'm with the guy above, you're on the verge of a meltdown.

dubulup

I think 15psi is a little high for the stockers and the stock IC...probably the turbos heating up to much at 15psi, you might be able to make more power at a lower psi...little cooler air and the stock IC can't help too much, I'm an idiot though

I was making 301 at 13psi seq-setup.

FstFD3SPOWER

So what i have to do to get RPM READING..
my tech can't do it.. i can't fig out..
HELP?

RX7 RAGE

iTrader: (22)

yea, running that much boost on the stock intercooler with the stock turbos is a time bomb.

spoolin93r1

i brought the a/f back down, just wanted to see what it would do at an even 12.5. the turbos are brand new with less than 2,000 miles on them. i know i'm running them at their edge, but that'll just give me reason to go to a single. as for the intercooler, i've got an apex front mount and intakes on the way as well as a radiator and fuel pump. it was only running 92% injector duty with the fuel cranked up and running 10:1 a/f. but at any rate, i know the damage that can be done, i never asked for comments about my mods, i just wanted to know what everyone thought of my numbers. but i do appreciate all the concern and help you all provide

jdhuegel1

Wish I had you money!

WhtRocket

Nice numbers. Fresh motor too? Thanks for the post. Everyone knows not to run the stock turbos up that high but it's great to know what you get on a single run. I have about the same setup but with a mp and i got 275 rwhp and 234 lb-ft at 12 psi @ about 80F ambient.

af908

Nice numbers i am going to have the same setup i hope my #s are as good as yours

fdracer

you'll easily have 20 more rwhp w/ an ic and intake.

matty

really...that is news to me...tons of people run 15psi..My understanding is that you need to upgrade the IC before you can run that much psi.I am getting my car tuned for 15psi in the spring...alot of people do it and I am almost 100% sure that KD wouldnt tune my car to 15 psi if it wasnt fruitful or if it was dangerous.

cabaynes

iTrader: (4)

good to hear keep us updated

Stevil

Strange how our cars are different w/ similar setups(which has been said all along). My latest dyno with above mods, plus Bigger secondaries, IC, fuelpump, and pettit intake(but w/ seq turbos) was 317 rwhp and 254 tq. This was in the 14 psi range and my a/f above 5k rpm was off the chart in richness, less than 10:1. So, I could take out fuel and hopefully still gain hp. This was in 65-70 degree weather. This was also in 3rd gear.

My boost is set to 12 but will spike to 15. Which is fine for me. Also, one does not usually run at 15 psi for extended periods, well at least on the street. But I had my boost set in the 14s since I have had PFC(w/ HF cat). These are 80k stock turbos running like this for 1.5 years. Approx 8k miles of agressive street driving.

Steve

ttpowerd

Absolutely correct! You are in for some serious trouble. If you want more power open up the intake and change that intercooler

kwikrx7

He'll tune it for 15 psi but running the stock turbos daily at 15 psi will just cut the life of them dramatically - some people have run the stock turbos at 15-16 psi at the track for numerous runs for years and they've done great - but boosting 15 psi on the stockers even with a IC can't last much more than 30K miles - not sure.

WhtRocket

[QUOTE]Originally posted by matty
[B]

Yeah it will work for a while but generally not for long. If you look at the rest of this thread, you'll see I'm not the only one who thinks this is a bad idea. I was wrong to say everyone knows this. After all, you take exception so there's at least one believer.