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I have been having a hard time with the KR creeping up so now that its under control I would like to push the timing up. plus i generally have been at 14-15 pounds and its been spiking to 20 in 3rd....

I have been tuning/learning with a 2000 ecm. It has some drawbacks but not enough to want me to switch. I would just use the one you have while its a heads cam car. This will get your feet wet and...

Here is a recent pull i made on the truck. The KR is better but maybe not. I changed the KR decay rate to 1.0 and smoothed the timing map some. Checking it with 2 decimal places definitely...

Your low octane spark table has a giant cliff for the timing right where the KR starts. That needs smoothed. You also said you changed injectors. I am going to assume you went bigger. If you did...

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When I looked at my tune and log there is a small 1 degree drop in timing. Would this be enough to cause a little KR? I am going to smooth it and see what happens.

Ill try both methods and report back what I find.

Turbo 2002 5.3 TSP 220/220/114 cam on3 78/75 317 heads, 91 octane obama gas, Snow performance methanol kit on about 7 psi and full at 20 psi with number 3 nozzle with 50/50 mix

I recently...

I just wanted to update on this. I smoothed the VE a lot, switched the o2 switch points to 350. The truck did great considering what it is. I managed 10 mpg towing with the slide in camper. I...

I am currently working on my tune for my mostly stock 2006 silverado. The truck is used to haul my slide in camper with my race truck on a trailer behind it. The truck is all stock except a cold...

The boost enrichment and the power enrichment are set it and forget it tables. If you're seeing 7% difference it is 7% different from the VE table/1.3. Once the VE table is showing minimal percent...

There was definalty crankcase pressure. Off boost you wouldnt ever know but increasing the boost increased the smoke. The motor had over 400k on it so im not suprised it let loose. I am just...

I have tried attaching the maf directly to the throttle body and the truck wouldn't hardly run. It would idle and have a lag when giving it throttle. Moving the MAF away from the throttle really...

I have a 2005 lq4 with 317 heads TSP 220/220/114 cam pac1218 springs, 7875 turbo decapped injectors, br7ef plugs, 4l80e trans . I have blown 2 pistons in this motor on 2 separate 1/4 mile passes. ...

Thanks.

I will look into it. I have a couple that i can compare this one with.

What part of the o2s seem to be incorrect?


I also plan to run open loop and log error with my wideband....

I havent been able to get back to the car till this evening. So far her is what I have and its pointing me in the direction of a wiring mess up. Here are my most recent logs. The car just wants to...

Thanks I will look into that and report back.


I have the STFTs logged bank 1 and bank 2 separate. Bank 1 is showing trims as positive and bank 2 is showing trims as negative during closed...

I am working on an LS swapped car that is having a problem with one side of the engine shutting off. Here is a little background information. The donor engine and trans came from a 2013 silverado. ...

Thanks So much. I will look into all of this today and report back with results

Thanks Mr Smith. I tried the Summit Race Gas octane booster today. I had about 5 gallons in the tank and poured in half the bottle. It didnt seem to help but it was also hot outside. I then...

I have been :banghead: trying to rid myself of KR. I have tried to richen everything, pull timing in the trouble areas and cant seem to make any progress. I am hoping someone can look at my most...

Attached is a final run for the night.

I am still getting KR at 3600 rpm till about 4800 rpm. I have attached a log file. It seems that there is something in the tune causing this. I have tried...

I followed your directions and went back to an old known good spark table from back when the truck was NA. I took 5 degrees out of both spark tables to start. So far it has been getting better. I...

I have done what dermotw and mr smith said. I still have the same results. here is the most recent log and tune. I even tried pulling 5 degrees across the entire spark tables. Bother low and...

Thanks guys. I will give this a try and report back.

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Attached are my most recent log and tune.

I have since started to log with my wideband so its easier for others to see whats going on and possibly help me with my tune. I dont...