Need some help guys...

[Jobodizo]

Quick little addendum: Edelbrock sent me a VMP-style brass charge sensor with a mini harness adapter (I'll solder it later) and a tune update to reflect the new RTD curve. We might have a winner! Not only did the first couple of runs read the correct temperature, but it also seems to have stopped the coughing and stumbling on cold start as well! It's going to be 9*F here tomorrow, so I'll try it again tomorrow to verify.

It's odd, almost like even though the data logs SAID the ecu saw the correct temp, it was trying to start with the -74* temp that the dash cluster saw. Who knows. Still keeping my appointment on the 7th with the local guy to iron out drivability (slight surging on maintenance throttle), but at least as of right now I think it's fair to say that it was the temp sensor and the tune's interpretation of it causing the issues. Fingers crossed!

Also, public service announcement: the plastic charge sensor is a b&$*% to get out after some heat cycles. Even with the engine warm it was threatening to snap. Through RIDICULOUS amounts of Googling I found that brake cleaner (when used sparingly) dissolves the thread locker that it comes painted with.

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[ugstang17]

Well now. That makes sense. Glad to hear it. So we were on the right path. Good job.

 

[Jobodizo]

Done, and OMG is it a night and day difference.

The Edelbrock tune was putting down 519whp and 472 ftlb. With this guy being conservative (at my explicit direction) his tune put down 583whp and 550 ftlb. He said the drivability issues were all in Edelbrock’s torque tables and the throttle body hunting for the right torque output. The engine just FEELS happier, and so much smoother through the entire range. My only problem now? Clutch slippage if I ever put stickies on it!

If you ever need a tuner, I can now swear by Lee Blankenship in Shelbyville, KY.

Thanks again guys!

 

[ypena02]

@Jobodizo Those are awesome gains! Is this on 93? How much boost?

 

[Jobodizo]

93 on about 10.5psi. Stock headers, cats, and air box.

 

[ugstang17]

Looks real good. Great numbers. Sure glad you got this ironed out.

Just Curious. What prompted Ebrock to finally send you the VMP IAT sensor and kit?

 

[Jobodizo]

Honest to God, I don’t think they ever tested the plastic one below 35*. They claimed it was because the computer thought resistance went to infinity when it approached 0*, which I told them we often see here. Apparently they also had some people in Canada having problems, and I was their test bed because I was in a more temperate climate (only 7* at the time as opposed to -30*). Of course, the hard start issue was masking the shitty torque tables, but whatchagonnado.

 

[Burkey]

Glad you got it all sorted in the end.
Damn I hate when I’m right
How do you go for grip in third gear?
Will it decimate the tyres easily from a roll at low rpm in third?
More info required PLEASE

 

[Jobodizo]

It was a monsoon here yesterday, so I was limited in my play time. I can tell you I downshifted to 4th at 45mph and “accidentally” pushed the pedal too far and saw boost. I almost spun the car on that one!

 

[Burkey]

It was a monsoon here yesterday, so I was limited in my play time. I can tell you I downshifted to 4th at 45mph and “accidentally” pushed the pedal too far and saw boost. I almost spun the car on that one!

Excellent!!

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