LennyLennox
Joined: 05 Nov 2007
Posts: 15
Location: Benoni
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 Posted: Fri Feb 26, 2010 9:10 am Post subject: Violent Jerking in 1st, 2nd & 3rd gear |
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Hey guys, I'm having a problem that I can't seem to get around.
My car has been jerking violently sometimes in 1st gear, most of the time in 2nd, and occationally in 3rd, sometimes around 5000rpm @ 0.6 bar in 1st or 2nd, other times as low as 3000rpm, boost only around 0.3 bar in 2nd. If I increase boost, jerking is more violent. I am currently running wastegate pressure with 95 octane fuel. It feels and sounds as though a boost pipe has come off, but all is in tact. If I drive at half trottle, no problem, I can go up to 200km/ph, but if I apply full throttle, it jerks.
Recent Mods since this has occured:
Rev Hard T3 manifold
Precision 5557E Turbo
Piping to suite new setup
Factors already eliminated:
Tried MBC instead of EBC
Replaced Spark Plugs
Disconnected Cooling mist
Replaced Cam position sensor
Changed map to Base map & 6 months ago map
Replaced Dump Valve
Reconed Wastegate
Checked boost pipes
Replace clamps to t-bolt clamps
Swopped relays
All other Mods:
HKS Cams
K&N Induction
720cc Greddy Injectors
3" OBX exhaust & Downpipe
Greddy Profec B II Boost Controller
Xcell External Wastegate
RevHard T3 Manifold
Precision 5557E Turbo
TRE Performance Fuel Pump.
Please help!
Lennox |
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