Boost leak between tb and IAC???

[68ChargerJMP]

Rear mount turbo....I've been chasing boost leaks that all started when I overtightened the band clamp on my maf and cracked it...got that sorted and noticed a leak between the tb and IAC...anyone have this issue or know if I can fipg it to the tb? Thanks.

 

[gamefreakgc]

Before you do anything crazy, it's possible you put the gasket on wrong. I had this same symptom, had a vacuum leak and thought for sure it was the IAC. Took off the throttle body and sure enough, I stupidly put the gasket on sideways. No idea how I did that.

If it wasn't that, replace the gasket between the IAC and TB.

 

[68ChargerJMP]

Thanks gfgc.....its definitely the IAC. I sprayed it with soapy water with the intake/charge side pressurized. The gasket on the IAC looked good but probably wouldn't hurt to try a new one.

 

[68ChargerJMP]

Put a new IAC gasket on, black FIPG on the solenoid part of the IAC. Found a used TB at the junkyard. Also, replaced the old style MAF with new style. It is running good for now.

 

[gamefreakgc]

The newer style MAF's run rich, but I'm guessing you have a tuning system anyway so that's not an issue. I noticed a difference when I switched with my supercharged system, can't wait to increase boost and increase those gains.

 

[68ChargerJMP]

Nope.....no tuning....just driving.
Better a little rich than lean.

 

[gamefreakgc]

Nope.....no tuning....just driving.
Better a little rich than lean.

If you used something like the AEM F/IC 6 I'm sure you could hone it in a bit and gain a lot more HP out of your current setup! It's less than $400 on Amazon right now.