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Thread: Timing opinions for rebuild

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Posts: 31-38 of 38
2010-05-29 15:08:29
#31
Originally Posted by gtswrx
My 8 psi make sense since they say that this boost sensor bleeds 0.2 bar from the wastegate, effectively making the boost 0.7 bar, so actually the wastegate is only 0.5 bar. On my setup I didnt have this boost sensor (not needed anyway since I had a Greddy profec spec b).
This is all good, new news to me. Thanks. Makes me wonder why they have you check for wastegate movement between 0.6 and 0.7 bar if the actuator is set for 0.5 bar. =/
2010-05-29 15:58:48
#32
I've never touched the injector latency stuff before, does that spreadsheet do a pretty accurate job at creating a new latency time? Also, does latency need to be adjusted more since I am running a different MAF (and the spreadsheet doesn't calculate for that), or is latency only injector related?
2010-05-29 16:00:47
#33
Latency should be injector related only.
2010-05-29 16:09:10
#34
Awesome. Thanks for the quick response Ben!
2010-05-29 16:56:52
#35
Yup use the Latency from the 444cc tune. Problem is you have to burn chips. Well problem in my opinion. Thus you need to get values that are guaranteed to work.

In my real time I just sit in the car and adjust the Latency until I get smoother idle
2010-05-29 18:38:52
#36
I just compared the number the spreadsheet gave me for the 444's to the GTi-R. Pretty close! Spreadsheet gave me .70ms and the GTi-R stock was .77ms. Guess I'll just bump it up to the .77.

I don't really have any problems with removing the chips to burn them. I've got a system worked out, just takes me a couple of minutes.
2010-05-29 19:44:00
#37
Originally Posted by BenFenner
This is all good, new news to me. Thanks. Makes me wonder why they have you check for wastegate movement between 0.6 and 0.7 bar if the actuator is set for 0.5 bar. =/


Well, one is word of mouth from one guy and the other is word from the FSM, but indeed my GTi-R T28 turbo without this boost sensor does not go beyond 8 psi stock.
2010-05-29 19:55:44
#38
Then once again I believe I am getting boost creep. Damn.
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