Exhaust Pops and A Failed Race

[anotherneon]

Doesnt look like taking it off eco mode would have helped

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[wireless]

Doesnt look like taking it off eco mode would have helped

He'd still beat me but the difference in power between Eco & the "high performance" map is roughly ~50whp and over ~100lbft of torque.

I had to stop around 1/8th of a mile because there was an 18 wheeler on the side lol

 

[mbreinin]

Unleashed has one mode, balls out. The only switch I have to concern myself with is TC....which I leave off for the most part. My foot is a pretty good regulator of economy vs. performance. LOL

Mike

 

[wireless]

I kind of wish the Cobb tune was more aggressive. :(

I'm happy with it, but I'm excited to go with a more aggressive tune once I get more mods.

Also, lmao @ balls out.

Btw -- Mike -- do you know of any good driving roads in East Texas area? I'm looking to do a road trip for some twisties soon.

 

[mbreinin]

Btw -- Mike -- do you know of any good driving roads in East Texas area? I'm looking to do a road trip for some twisties soon.

Not really, I could ask some friends though.

Mike

 

[wireless]

I've heard there are some good ones in the Southeast AR area as well...

 

[mbreinin]

I've heard there are some good ones in the Southeast AR area as well...

AR has mountains, so you are probably better off there.

There are two road courses around NOLA if you want a track.

Mike

 

[mizer67]

I'm a tuning novice, but could that popping be from the AFR becoming too lean?

I noticed in one of the members data logging the Cobb tune that the AFR had spikes up into the 44 range vs. a 14.7 target (factory AFR is around 13.6 I think). That data logging event had an average of 18 AFR due to those spikes vs. the target.

 

[wireless]

I'll datalog my car soon. I'd like to verify that. If it spikes up to the 44 range.... yeaaaah.

 

[5TAR5CR3AM]

I can build 10 psi of boost on the footbrake with my car, and I have never heard anything like that.

You mean like brake boosting while rolling? Or like 2-step at the line?

 

[5TAR5CR3AM]

I'm a tuning novice, but could that popping be from the AFR becoming too lean?

I noticed in one of the members data logging the Cobb tune that the AFR had spikes up into the 44 range vs. a 14.7 target (factory AFR is around 13.6 I think). That data logging event had an average of 18 AFR due to those spikes vs. the target.

Usually pops are a result of a rich spike causing unburnt fuel to be dumped into the exhaust. When you remove cats and go with straight through design res/mufflers the end result is usually flames. Or it could just be back pressure.

 

[mbreinin]

You mean like brake boosting while rolling? Or like 2-step at the line?

I mean just footbraking it while stationary. If you want to brake boost it on the roll, you can bury the boost gauge.

Mike

 

[5TAR5CR3AM]

Hmm that's interesting. I'm going to go try that now lol

 

[mbreinin]

Hmm that's interesting. I'm going to go try that now lol

It takes some technique to get the revs and boost up without spinning.

 

[DanFish]

I hate you guys right now. I'm sitting in the desert waiting to go home to get my car. All I think about is my car.

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