car falling on its face

[alex a]

i have a 99 ta a4 i just put a cam and stall in it last week and now if i try to go threw the gears hard it falls on its face even when i just drive it normal it loses power but somtimes its fine can someone help me out on whats the prob thanks

[sfletch2000]

Did you have it tuned after the install, if not that could be your problem. Most cams require a tune after they've been installed especiall for an A4

[alex a]

yea they tuned it with hp tuners i think it could be the stall i dont no

[98_BAT]

check all your spark plug wires, making sure all are truly on the spark plugs. You should hear them click in place. I went 3 months thinking my engine was gone, and then I found a loose wire.

[sfletch2000]

And they didn't notice this when they tuned it?

[slims00ls1z28]

Does it do it at a certain RPM or speed or just anytime you mash the pedal?

[alex a]

only at certain rpm what do u think

[lmdz28]

i think it is your tune. even a pro tuner made a mistake on my budys tuning.

[2001hawk]

What RPM are we talking about? Personally I would say when you change something and then get a bad reaction it is most likely in the change, but then it could also be something like an O2 sensor those wires run pretty close to things down there.

[danziger]

Also check dumb stuff like the fuel filter/lines and injector leads...