rev-speed

http://fresnoracing.ipbhost.co...44988

Mr. Softee

your exhaust is hurting you.
your manifold is mediocre.
your turbo is mediocre.

Change those 3 and retune. Demand 400whp.

rev-speed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94goldjungsr &raquo;</TD></TR><TR><TD CLASS="quote">your exhaust is hurting you.
your manifold is mediocre.
your turbo is mediocre.

Change those 3 and retune. Demand 400whp.</TD></TR></TABLE>

so u don t think anything is wrong?
i just have the wrong combo

mitsuman

iTrader: (1)

something is deff wrong. i made 230whp with my old b16 turbo set up at 8psi. you should deff be seeing more than 307whp at 18psi. whats your cpr lookin like?

Mr. Softee

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4cylinder &raquo;</TD></TR><TR><TD CLASS="quote">

so u don t think anything is wrong?
i just have the wrong combo</TD></TR></TABLE>

Nevermind.

rev-speed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mitsuman &raquo;</TD></TR><TR><TD CLASS="quote">something is deff wrong. i made 230whp with my old b16 turbo set up at 8psi. you should deff be seeing more than 307whp at 18psi. whats your cpr lookin like?</TD></TR></TABLE>

did u dyno on a dyno pack or dyno jet?

underpressure02

I only have a drag kit on ls-vtec at 10 psi I put down 306 and 249 tq.

IntegracinGSR

The exhaust is really hurting you.. 2 1/4 is tiny..

underpressure02

I only have 2.5 exhaust I can't believe that 1/4 inch would make that much difference. I also have a smaller turbo I believe. Maybe it is your tuner.

rev-speed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by underpressure02 &raquo;</TD></TR><TR><TD CLASS="quote">I only have 2.5 exhaust I can't believe that 1/4 inch would make that much difference. I also have a smaller turbo I believe. Maybe it is your tuner. </TD></TR></TABLE>

air fuel at 11.8 to 12.5 made barely any difference and a couple degrees more timing didn t help much

from the dyno sheet doe anyone thing something is leaking?

underpressure02

you do a valve adjustment? is your timing set correctly?

m R g S r

Could be a boost leak. Have you checked for it yet? That turbo manifold is not bad at all. That should NOT be the cause. What's compression look like? Maybe the motor is in poor shape. .

rev-speed

valve adjustment done about 8 months ago
maybe i ll check it today

timing belt is set
ignition timing is set @16btc
motor has good compression 180 in every hole
vaccum is steady at 22inch

m R g S r

So maybe boost leak, or exhaust. try running open downpipe and tune it that way, see if the power goes up alot. If it does, it's the exhaust

rev-speed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by m R g S r &raquo;</TD></TR><TR><TD CLASS="quote">So maybe boost leak, or exhaust. try running open downpipe and tune it that way, see if the power goes up alot. If it does, it's the exhaust </TD></TR></TABLE>

whats the best way to check 4 boost leak?
i check all the clamps and hose and they re all good i have heavy duty clamps
maybe i have a hole in my intercooler or a crack in my turbo.

D-tuned

it definitely looks like you have a boost leap. that dyno sheet is too linear for a boosted car. what you can do it disconnect the charge pipe at thethrottle body and blow compressed air into it and look and listen to see when the leak is comming from. or let the car idle and spray brake cleaner around you intake manifold and throttle body and then spray you vaccum lines.

TheShodan

iTrader: (14)

I don't think that the parts are neccessarily wrong, though the exhaust is a bit small for any top end. I'd look at exhaust / vaccuum leaks in your entire system, and honestly, I'd make sure that the tuner isn't making you soo rich and keep the timing retarded so much, that it's not hurting additional performance.

Si Shane

If your manifold says 18psi, how could it be a boost leak? Would the turbo spin faster to pump more air to compensate for the holes and go out of it's efficiency range? I dont understand

rev-speed

it says 18 psi and holds on my boost gauge
and 1.32 bar on my avcr

boosted92

How high are you spinning it? Next time you dyno, make sure the scales are the same on each side and make sure you don't cut off the RPM's at the bottom. Taking a quick guesstimate based on 308 WHP and 225 WTQ at that peak there, you're spinning the motor to no higher than about 7500 RPM's. Take that out to 8500 and you'd make a goodly amount more power. How late does boost come on, I'm getting a headache just trying to look at that graph but it looks like boost is coming on very late so you might have a boost leak somewhere, or even a blown turbo.

goose21

I have a b16 9;1 with stock sleeves and the same turbo. and even the same size downpipe. Only i run open down pipe.
My car made 280whp@10psi 320whp@15psi 347whp@17psi but on 18 it wasn't making more power and on 19psi also no more power.
I think its the exaust in combination with the turbo why you can't make more power.

boosted92

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by goose21 &raquo;</TD></TR><TR><TD CLASS="quote">I have a b16 9;1 with stock sleeves and the same turbo. and even the same size downpipe. Only i run open down pipe.
My car made 280whp@10psi 320whp@15psi 347whp@17psi but on 18 it wasn't making more power and on 19psi also no more power.
I think its the exaust in combination with the turbo why you can't make more power. </TD></TR></TABLE>

You're making 347 WHP at 17 psi vs. his 307 WHP at 19 pounds of boost, and he has a significantly larger motor than you. It's more than just his exhaust.

dennis

What's your compression ratio? I may have missed it, but didn't see it listed anywhere. Maybe it's way down? Exhaust does suck though

FredoSP

i think its a boost leak b.c I remember Mase saying something in another thread about the torque, it usually levels off, but yours keeps growing.

I'll PM Mase this post

ComputerJLT

cam timing could be fuct

too much overlap will kill power; or so i've heard