For the last 2 weeks I have been pretty pist off with my car cuz its runnign like ****. I cant find out whats wrong with it. The car feels very sluggish and def not running right.

Here are my mods: my car makes 335whp on pump with a dynoflash,

MR BOV
TXS Catback
TXS Downpipe
TXS Test Pipe
HKS RS Intake
Ultimate Racing IC Pipe Kit
Blitz SBC ID Boost Controller
ACT Clutch (2900)
Walbro Fuel Pump
Greddy 660cc Injectors
HKS Cams (264i, 272e)
ARP Head studs


Last night to test everything out i did a pull with my freinds evo who has just an intake and full exhaust (2005) and no flash. Now from 40-110mph both cars were right next to eachother and we had to get out of it. I didnt pull on him at all!

Only simptoms i can see is the car seems to mis a little and boost doesnt hit as hard as it use to. Any ideas?

The only thing i have changed within the last month are my rims. I did keep the overall diameter though and i dont believe they are that much heavier than stock.

The boost is at 21psi and holds it fairly well till redline. I changed the plugs 3k miles ago and oil about 2k miles ago. I plan on changing both again tomorrow to see if the plugs are shot.

ERIK

 

I also compression tested the motor last weak and all 4 cyl read 165


ERIK

 

if they are cold plugs, they dont last that long, is the clutch slipping? I had a non-stock "cone" intake, and since there was NO vortex, it ruined my MAS, causing the car to lose hp by running super rich. I dont think you need the larger injectors unless you have a larger turbo. take the car in to the dealer and have them plug in and read the MAF readings. mine was shot, and the only symptom was it "felt" slower. my 2c, good luck!

Also, did you add any other parts on the list that needs a dyno, and you havent dynoed it yet?

 

Summer heat and humidity will cause a turbo charged car to feel sluggish. I bet it feels right on a cool evening. Mine acts this way during the day, but at night when the temps get into the low 70's it runs great!

 

+1

 

You can bring it by and we can look at it and scan the data

In your case most usual suspect is a boost leak followed by misfire

 

how do we solve the misfire issue?

new pluggs gapped correctly? new wires?

 

what should bpr7es be gapped at?


ERIK

 

I gap them at 24 to 25

 

Today we changed the plugs and gapped them to .024. Took it for a spin and no difference. So then we did a boost leak test. Immediately we heard a leak from around the TB and so we tightened the IC pipe that connects to the TB. Tried the test again and still we heard a leak from the same area but not as loud. After further inspection we noticed that it was the TB arm that connects to the throttle cable that was leaking. If you held pressure on it, the leak went away. Is this normal? During testing we didn't hold down the gas pedal and the test was performed at 20psi. We are just running out of ideas. The car is still low on power.

Thanks
Dan and Erik

 

The TB is always going to have a slight leak - not significant

Trouble shooting cars is sometimes hard work and takes experience.

Bring it by and I can find your problem soon enough

 

I'm in the same boat as you are.

The best I could get with all the supporting mods was a 12.8@106 with a 1.75/60'. Al instructed to change the plugs (gap them to 24) do a compression and boost leak test. Did everything he said and no change. The car does miss in the upper RPM's at full throttle, I also got a code on the EGR. After all was said and done I think the problem was with a bad o-ring on the injector. Most likely the tune was done with the bad o-ring. Al said this could be the problem and needed to be retuned. Even though I would get charged again that wasn't a problem, I just wanted the car fixed and running strong. I ended up missing him at the shootout due to military duties (getting the shaft at work) so no retune.

I plan on haveing the car brought up to Bushcur and have them check everything out and then tune it with AEM EMS. So hopefully all goes well and I get the power the car is supposed to make.

Thanks for trying to help out Al I know you said the car didn't feel as strong as the others after you tuned with the alky. We'll see what happens with the AEM EMS, that is unless you are in Ohio in Sept.

Coming to you from a delployed loaction
Pete

 

if you find out whats wrong with yours please let me know, seems like mine is doing the same thing. Mine is running super rich blowing out flames in between gears. I have txs turbo back with cat del, boost controller at 20psi, and base dynoflash. It holds boost pretty good but is just going no where.

 

If you can get th car down to Buschur for the week before the shootout - August 13 - I can retune it on the new mustang dyno for you.

The car was without a doubt weak on the alcohol - in fact the weakest one I tuned with alcohol so far. Hopeully it was your o-ring.

 

Give me a call when you have a chance so we can review your particular car.

It is highly unlikely that your car has the same condition as the other gentleman's car. His car developed a problem over time after running fine for a long period. This is probably mechanical.

Yours is apparently running rich and slow which may be tuning related. Call me so we can go over the basics and consider trying a different flash.