Quote:
Originally Posted by silviamang
Congrats on getting the car dynoed and your setup all done. Seems like you put a lot of thought and effort into the car.
But man.... those numbers do seem pretty low and your description on how the car drives doesn't sound right either. Was the turbo brand new? And is the engine healthy? I think that "Martin" guy you mentioned in your post might be onto something.
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Thanks! Yeah Martin (Martin of RS Enthalpy) said something Is up. Thinks either the wastegate isn’t prematurely opening OR most recently asked me to check for engine throwing code 34 which is knock sensor loop failure (could be break in wiring, ground, dead sensor). The latter would put the car into limp mode (retarded timing, increased fuel) in lower rpm range to protect against detonation. Said he’s seen it rob 50 HPC
Apparently the Ecu stops looking for detonation after 4500 (or thereabouts?) as there is too much engine noise to discern accurately so it just doesn’t.
This would absolutely explain the loss of power down low, crap spool. He’s under the impression from experience that this turbo should still be hitting hard beginning at 3800 rpm, despite it being known to be laggy.
I’ve chased and researched why/how this could be so laggy (summed it up to ROM tune+turbo design) and this is one of the last things that could seemingly create a condition for consistent lag/sluggishness down low yet still deliver a punch in upper rpms. I’ve learned to drive around it by rolling into throttle below 3/3500.
I will be checking for the code and any issues w the sensor this weekend. Would be cool if that was it and it spooled faster. I’d take even 500 rpm sooner [emoji28].
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