This only became 100% evident when my brother complained of my car's lack of power compared to his 02 with 5-speed.
This is not what I would consider limp mode because I had a MAF go bad and that was worse then what I'm experiencing now.
255k miles with original injectors and injector pump.
The car will accelerate decently but never really gets up and goes. Seems to be lacking on the top end but I can get the RPM's easily up to 4000+. I noticed the difference between our cars what seemed like after the turbo lag in all gears. Mine didn't really have turbo lag but performed ok and his definitely had lag then pressed me somewhat into the seat.
To be honest though we don't know if his car ever had any mods performed on it. He got it with an engine swap and that's the only history we know.
List of items checked/done:
-cleaned intake
-checked snow screen
-new air filter
-new fuel filter
-checked fuel pickup assembly
-verified n75 operational and swapped with n18
-VCDS logged actual vs requested boost and curves follow closely (max psi about 14 psi boost and holds)
-checked timing with VCDS
-hammer mod performed (no change)
-swapped MAF no difference
-wired open anti-shudder valve
-new vacuum hoses
-verified 23" vacuum post n75
-new stock cam/lifters
-MPG about 42 mpg with mixed driving
-turbo actuator moves freely
Ideas:
-catalytic converter plugged
-weak injection pump
-bad injectors
Any ideas on tests I can perform?
Thanks
This is not what I would consider limp mode because I had a MAF go bad and that was worse then what I'm experiencing now.
255k miles with original injectors and injector pump.
The car will accelerate decently but never really gets up and goes. Seems to be lacking on the top end but I can get the RPM's easily up to 4000+. I noticed the difference between our cars what seemed like after the turbo lag in all gears. Mine didn't really have turbo lag but performed ok and his definitely had lag then pressed me somewhat into the seat.
To be honest though we don't know if his car ever had any mods performed on it. He got it with an engine swap and that's the only history we know.
List of items checked/done:
-cleaned intake
-checked snow screen
-new air filter
-new fuel filter
-checked fuel pickup assembly
-verified n75 operational and swapped with n18
-VCDS logged actual vs requested boost and curves follow closely (max psi about 14 psi boost and holds)
-checked timing with VCDS
-hammer mod performed (no change)
-swapped MAF no difference
-wired open anti-shudder valve
-new vacuum hoses
-verified 23" vacuum post n75
-new stock cam/lifters
-MPG about 42 mpg with mixed driving
-turbo actuator moves freely
Ideas:
-catalytic converter plugged
-weak injection pump
-bad injectors
Any ideas on tests I can perform?
Thanks