HELP! Supercharger ???'s

[OrangeCrush]

Originally Posted by HUMMERcustoms.com/TAZ

CONRAD

It is possible that You have a problem with air/fuel on one side for many reasons. I would park it and if Your programmer will read the codes do so and clear it. Then see if it comes back on when You drive it slowly or normally to the shop. Do not go hard do not for a even a second to test and see if it will happen again. Go to the shop slowly or I should under no boost. If shop is far and You get any kind of lights have it towed the rest of the way. I'm sorry to be an alarmist but, a tow bill is a lot cheaper than toasting an engine.

TAZ

I agree. I think that the ECM will compensate a certain amount to get it to the shop. Under NO circumstances would I be allowing the supercharger go into boost.

Just out of curiousity, what programming are you using?

I (and my tech friend) installed my Maggie this weekend and used Nelson's programming. Unfortunately since I need a few brackets and stuff, I didn't get to drive my beast home but the only code that showed was a throttle position sensor needed to be reprogrammed.

Good luck, keep us informed.

Mark

[obzidian]

Is that what it reads when you say its all the way to the right?

Im not saying that it is the volant maf, however, the reason they make "power" is by telling the PCM that it is getting an amount of air while in reality, it is not. For example, let say your stock afr was at 10.0 at WOT. In order to make, theoretically, more power, you would need to lower the amount of fuel being dumped into a cylinder in order to reach the max torque or HP with a specific afr. Some like to go over 13.0, while others tune it safe, fuel wise, and say the tune is "pig-rich" for safety. Better rich than lean.

Thus, the newly calibrated MAF is PROBABLY telling your computer it is getting a higher amount of air than what your motor is really getting. IF you notice, and i think TAZ has mentioned this a bazzillion times lol well, its true. MOST tuners will swap back to a stock maf as the readings it gives is stock in nature, not modified which can be finiky when tuning.

ANYWAYS.... hold a sec!! What gauge do you have? A narrowband or wideband? I ask because i wanta know how you know it says 14.6? Also, if its a autometer, i think all of their gauges read lean to the left, ma being 20 afr.

However, if its an aem wideband, then lean is on the right. Anyways 14.6 is about stock, non-pe tables/wot AFR. You drive like this all day long when not in WOT/power enrichment mode. If it can hold that securely enough for a while when you drive around, then you can make it to the shop ok.. just make sure it doesn't go over 14.7. You see 15.0, over the gauge shooting up quickly, shut her off.. and try to record what exactly you were doing if/when if would go above 14.7.

14.6 is fine... anything higher than that, like a 16.0.... watchout!!

Do you have a pic of your gauge or a link to a site? Thanks!!