CLsuperhero

my guess is engine problem... your valves are either gunked up or starting to give out. I think some of your valves are giving out in the top end giving you those problems there. The valves are not in sync to me... which may explain why you didn't hit redline until 7,000 RPMs. Springs also could be the problem. sounds like a valve readjustment or replacement job to me, but I'm no engine expert.

CLsuperhero

found this on wiki:

http://en.wikipedia.org/wiki/Lean_burn

read about the Honda stuff... Might give you more insight as to what is going on.

CleanCL

iTrader: (4)

i'm not sure what you mean by, "that's why you didn't hit redline until 7,000 rpms". the official published redline by acura is 6900 RPMs. so i was only 100 rpms off and i'm pretty sure you can rev higher than 6900 in the type S.

mrsteve

iTrader: (1)

Your HP curve looks normal. A N/A J32 makes peak power around 6200 RPM then levels off and trails off a few HP before redline.

Here, I'll post the only dyno I have laying around still. The red line is N/A. Notice my HP and torque curves drop off.

mrsteve

iTrader: (1)

Here's another J32A2 dyno:

mrsteve

iTrader: (1)

So basically I think your dyno looks normal with the exception of your AFR which I would tend to believe is a bad reading by the dyno.

New Image

what are your mods?

Allout

I can understand why you're discouraged. With your 3.5L upgrade, your numbers look way too low from what I would expect. Hopefully the dyno that did this was out of calibration. If not, it may be worth a trip to the dealer to find out if there's something else going on.

Have you tried resetting the ECU?

mrsteve

iTrader: (1)

I think the dyno is just reading low...

mrsteve

iTrader: (1)

Try another dyno and see what it reads...

CleanCL

iTrader: (4)

that's the plan, but both my lower balljoints are torn and tie rod ends are torn... i want to replace those before anymore damage occurs.

BigLizard

I would have thought you'd be putting out more hp and torque than what I see here.

My numbers aren't too far away from yours. 206whp, and that was last years dyno.

It doesn't look right to me at all.

mrsteve

iTrader: (1)

The numbers don't look right but the plot itself is 100% normal. It's just reading (hopefully) ~10% low.

Cocoa

iTrader: (2)

Seems like your car might be in Limp Mode. Is your CEL on? There is no way you are only putting down 225whp. Limp mode would result in an average of 15% power loss to the wheels.

Cocoa

iTrader: (2)

Or even big chrome rims would result in a power loss due to the added rotational mass. I have no idea what rims you have, but I'm just throwing ideas out there.

CleanCL

iTrader: (4)

no CEL and i'm running 17x8 OZ Superleggeras, i believe they are around 15.5lb

Cocoa

iTrader: (2)

Actually, I just remembered. Limp mode does not result in a CEL. Using a lower octane rating than what the manufacturer states to use will result in being in limp mode. Has your wife or anyone you know borrowed the car and filled it up with the wrong gas?

I agree with whomever said to reset your ecu. Do that and see if you produce different numbers. I believe the car wont get itself out of limp mode unless you manually do so by resetting the ecu.

Cocoa

iTrader: (2)

This was on a actual dynojet and not a mustang dyno correct?

mrsteve

iTrader: (1)

He wouldn't be running that lean in limp mode. The motor would be throwing tons of fuel through the injectors.

I think the dyno is just wack.





What gear did you dyno in?

CleanCL

iTrader: (4)

i have only been using 93 octane since i've owned the car, and since the motor rebuild.

dynojet, but not i'm not sure on the model.

3rd gear pulls.

ThinJim

iTrader: (3)

Been watching this for a while, and I don't think your running lean. If you were, you'd hear the detonation. Your graph does show a slightly lean condition, but the ups and downs are pretty close to what happens in a NA car. here is a pic of a dyno chart from the dyno area of acurazine.






I'd have to say it's the dyno equipment, if the same result happens at a new dyno, then it's time to check into it. Possible causes, several things to check, start with idle fuel pressure with vacum and without and check the book. thats the first place to look, if its low, you may have a weak fuel pump as the walboro does fail. I would say if you are running a lean at another dyno, then change the fpr and up the pressure a little, that will definitley richen it up.

as for thinking it's an internal problem in the motor, in this case i say no way.

check your fuel pressure for starters and report back, then spend the money on a new dyno. good luck.

rtatsutani

Try hitting the track for a couple of bucks. See if you can put down some 13 sec. passes. If you do, then there's no way you are running 225HP. Then you won't have to waste time on the dynos anymore and can see if you're having any real problems and not theoretical ones. That's made it easy for me to realize I had issues.