Tom M'Guinn

Triple-check for vacuum leaks too. Every time I've had the "return to idle MAF blues" it has been cause by a leak somewhere...

Crazy Eddie

What's weird is how can he have all the vacuum lines correctly routed without a J- boot ? I assume you can close some off but wouldn't that create issues ?

mark944turbo

You can route all the vacuum lines the same way as long as there are ports for them in the new piping.

I tried rotating the MAF- maybe a small improvement, but the AFR's are still off at part throttle. I also noticed that the car runs very rich (~10:1) when coasting with the throttle at 1% to 5% open. After trying to correct the part throttle table, on the street, without the Ostrich 2.0's "cell tracing" feature working very well, I've decided to give up. I'd lean out the low load cells and nothing would change coming off the throttle, but it would run too lean when just tipping in. It's enough to drive a person crazy without the right tools (a dyno, better emulator, and better knowledge of Motronic)

I'm going to buy Lindsey's 3" J boot, and try it with the MAF. At least if that doesn't improve the situation I can go back to the AFM using the same part. I'm really just looking to make 300 rwhp with perfect driveability- maybe the AFM was the best solution all along.