My car stumbles so bad it feels like I tapped the brakes right at the crossover poitn from boost to vacuum. It doesn't do it on acceleration, only on decel. When shifting you never notice it, but say I go into boost in 5th then back off the throttle it does it every time. I was thinking maybe a bad MAP?

Where is the cheapest place to get a map? Could I get one from an autoparts store and put my connector on? Any reason besides price not to just upgrade to the 3bar, since eventually I may need it?

Thanks for any help.

 

The MAP sensor won't be available at an autoparts store. I don't think I've EVER heard of one that actually was bad, though - they're a pretty hardy sensor.

More likely I'd suspect something with a secondary fuel injector - possibly a connector came off.

Have you checked for engine codes?

Dale

 

Power FC

I'll check those connectors though

 

Might be worth swapping the stock ECU in and checking codes.

Dale

 

if only I had it, lol

I'm not running lean in the high RPMs though, my secondaries have to be coming on. Any other ideas? It's only from boost to vacuum, it doesn't do it when accelerating