[jtmartin]

Getting my wideband installed this week - just installed an injen intake and uicp. Probably should have waited on the wideband...

I'm using the 91 octane ots access port map from cobb designed for the injen intake. I have a perrin catback. No other power mods.

Symptoms: slower acceleration, backfire on deceleration and when shifting. Hesitation during acceleration under boost.

My questions:
1. Any tell-tale signs this is running lean?
2. Could it be because I just switched maps and the car is still adjusting?
3. If this is a lean or rich issue; if I drive like a hyper miler until I get my gauges installed, should "I be ok?". Comfort me mommy. J/K
4. Any lean or rich symptoms that if I notice I take the car off the road until i get my gauge and therefore can get tuned?

Addition potential symptom- after a 15 min spirited test drive, there was smoking from the engine bat coming from the back of the engine bat, near turbo but exact source not known. After idling a minute the smoke cleared. I suspect this could just be the wd40, grease, and everything else that got on the engine during the install burning off from the heat.

Thanks
J-Tizzy










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[jtmartin]

I have a perrin turboback, not catback. My bad.


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[Evo_Zero]

Sub'd


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[HappyMint]

You need to do a log to the car, and watch your AFR gauge when going WOT. Does it go down to 11.1 or so at redline? If so, then you are most likely not running lean.

Most importantly, do some logs, look at them and see if you are getting knock, look at your boost, or drop the log in virtual dyno and look at your boost curve.

 

[SiliconTek]

This is going to be interesting...sub'd

 

[NZEvox]

Yep need a log to see whats going on,
If you do not have a widband installed then evoscan (www.evoscan.com) and a laptop will do for a start .
Install evoscan on laptop log your car and post the results . the one to log is the ltft to see if it is too far out.

 

[evo jason]

My questions:
1. Any tell-tale signs this is running lean?

My magical powers tell me your AFR is 11.2, so no, you aren't going lean. But seriously nobody can answer your main question until you install the wideband.

2. Could it be because I just switched maps and the car is still adjusting?

I seriously doubt it. There isn't an adjustment period after flashing a new map.

3. If this is a lean or rich issue; if I drive like a hyper miler until I get my gauges installed, should "I be ok?". Comfort me mommy. J/K

No idea what a hyper miler is, but if you stay out of the throttle it should be ok as long as the tune you're running isn't completely retarded.

4. Any lean or rich symptoms that if I notice I take the car off the road until i get my gauge and therefore can get tuned?

You really just need the wideband. Blowing up your motor would be a good symptom that you're running lean.

Addition potential symptom- after a 15 min spirited test drive, there was smoking from the engine bat coming from the back of the engine bat, near turbo but exact source not known. After idling a minute the smoke cleared. I suspect this could just be the wd40, grease, and everything else that got on the engine during the install burning off from the heat.

Again, very hard to diagnose from your description. It could definitely be some wd40 burning off on the hot side of the turbo. If it persists I would think it isn't something burning off and could be a more serious problem.

 

[ChuckthaDuck]

Addition potential symptom- after a 15 min spirited test drive, there was smoking from the engine bat coming from the back of the engine bat, near turbo but exact source not known. After idling a minute the smoke cleared. I suspect this could just be the wd40, grease, and everything else that got on the engine during the install burning off from the heat.

Still on the stock clutch?

 

[jtmartin]

Yup, still on the original clutch at 41,000 miles. During my test drive I didn't launch the car.. Haven't done that in who knows how long.. But I did get on it several times in a row... Something I don't normally do also, so could be something to do with the clutch I suppose.

I have a strong suspicion the smoke was wd40 burning off. I applied it liberally in some spots to get things loosened up. But a longer drive this morning should tell.






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