lean out with Diablosport?
Thread Starter
Staging Lane
Joined: Mar 2006
Posts: 60
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lean out with Diablosport? Well i just put in LT's and ory and i beleive car is running rich, should i lean it out with my programmer? Is there a way to see what the A/F ratio is with the diablossport?
BTW the diablo deletes/turns off AIR, EGR, and O2 codes which i remember a few people were wondering if it did a while ago
BTW the diablo deletes/turns off AIR, EGR, and O2 codes which i remember a few people were wondering if it did a while ago
TECH Enthusiast
Joined: Jul 2006
Posts: 747
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From: sofla
No gearhead, you should be looking for a custom tune now that you have installed long tubes. You can get a rough estimate of your wide open A/F ratio by monitoring your O2 sensors. You'll be looking to see 850-950mv at WOT. Higher than this and the car is likely running rich. Diablosport has a 'where to buy' dealer locator on their website, which will help you locate a CMR dealer in your area that can do a custom tune for you and load it in your Predator. Give them a call,561-908-0040, ask for Mike.
You need a wideband O2 to dial in WOT AFR's. During other driving conditions, the PCM will use the stock O2 sensors to maintain a 14.63AFR via fuel trims. As stated above, you might want to check into getting a custom tune. Usually if you tell the tuner what your fuel trims are (yours are most likely positive), he can richen you up down low so the positive fuel trims don't carry over to WOT. Usually, bolt-on cars need about 5~8% more fuel than stock to achieve the AFR commanded. Once that adjustment is made, then you can lean the commanded AFR out from the stock high 11's to high 12's and pick up about 10hp.
