Let's see your fully tuned timing maps
Jul 29, 2008, 07:47 PM
#408
Let us say the car has a GT35R. That turbo would go into full spool up around 5000 rpm. So shouldn't the tuner run the least amount of timing at that peak spool-up point? With a stock trubo peak spool comes at 3500-3700 rpm and the least amount of timing advance is reflected in that rpm. Wouldn't a similar method apply to a big turbo?
Jul 29, 2008, 07:53 PM
#409
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I run 6* at peak boost ramping to 14* at 7500 on my map. In logging it shows that I will occosionallly only hit 13 and get a couple of counts above 7700.
Im running 24-25 lbs depending on how the MBC feels.
Im running 24-25 lbs depending on how the MBC feels.
Jul 30, 2008, 07:55 AM
#410
Let us say the car has a GT35R. That turbo would go into full spool up around 5000 rpm. So shouldn't the tuner run the least amount of timing at that peak spool-up point? With a stock turbo peak spool comes at 3500-3700 rpm and the least amount of timing advance is reflected in that rpm. Wouldn't a similar method apply to a big turbo?
Yes where the timing is definitely changes, the amount seem to be about the same depending on how noisy the turbo is. Some kits seem to make enough harmonics that the engine picks it up as knock and why I mentioned the timing being lower from time to time.
2 VIII's we did-
On pumpgas for instance the ETS 61mm kit that we just did for Monty was 2* at peak boost and 10-11* out the top on 272s at 24psi.
I did a 57 trim 4 days after that and peak boost was 25 on pumpgas, stock cams, 92 octane 11.5:1 AFR, and I ran 2*-3* at peak boost and 13* out the top. On this car I probably could have pushed it more but the gas map is the "emergency" only map since the car is primarily an E85 car. On E85 the timing drops at peak boost (28psi) to 0-1* and then ramps pretty hard to about 18* out the top. In that trim it made 440whp.
