performance questionable

[Ski]

Hi guys,

Worried about my S. top end of the speedo dosnt pull like it used to.

first, second, third gears pull nicely, but soon as i hit 90, the car struggles to pull thurther. It still pulls, bit not as much.


Also, when in 6th gear, it seems like i get more torque when i half throttle it, when full throttle it gives the impression its struggling.

Like i said, it still pulls nicely, but not as nice as it did. The lower gears performance have stayed the same, which is baffling me.

Could it be the exhaust limiting me? (sounds like its limiting me form the sound, but lower gears perform ok).

idea's ?

290 QRS chipp, power flow exhaust, itg filter.

[Audi500HP]

1)check the hoses, spark plugs.
2) install a temporal manometer to check the pressure.
3) if those are OK, install a VAG com to check any fault, like a MAF or a coil.

Good luck