Post your turbo, timing, fuel and fuel ratio!

[blackrosenova400]

Well I put in bpr7es's at .022. No change and pushing coolant in the higher gears at 28 psi.

I guess its time to remove my cometic and put in a composite gasket with some new head studs. Woo hooo

[turbotalon1g]

Plugs aren't gonna change a serious problem like pushing coolant.

[blackrosenova400]

If my pre detonation was causing it then maybe.

What do you guys recoomend for a really good composite head gasket? Or any head gasket that doesnt require an RA of >50

[JET]

Just use a stock Mitsu one.

[Pushit2.0]

9.2:1 compression
47psi gt4202 w/ 1.01 divided housing
BPR8ES @.032
~5 deg timing
12.0:1 AF on C-16
rev limit 9500rpm
Also a leaner cylinder is harder to fire, in addition to pressure and plug indext.

~John

[blackrosenova400]

Ok well I went out and adjusted my base timing to 0 degrees BTDC.

Jeff at Keydiver has my max timing advance to 19-20 degrees.

I think it ran pretty dam good and I dont think it pushed any coolant at all. So either my timing is too high or my head gasket just cant handle the cylinder pressure. :scared:

The computer has no idea what the base timing is so if the logger says 19-20 with the base timing of 0, what am I really at?

What am I really at when im at when im at a base of 5 degrees BTDC and logger says 20?

If the computer assumes im at 5 then with my base at 5 my peak is 20

If the computer doesnt assume 5 then with my base at 5 my peak is 25

[JET]

Do you still have stock head bolts in? It sounded like you were talking about putting studs in.

[blackrosenova400]

I was talking about it because I always want to be on the safe side and replace my arp's in case they have stretched.

[Spyderturbo007]

^Um, noob. He started this thread so that he could figure out if his problem was with the tune he did.
He gave us the results.

Yes, I'm a noob and don't know anything.

Sorry, it was an honest mistake. I didn't realize he was the OP.

[Shane@DBPerformance]

The computer has no idea what the base timing is so if the logger says 19-20 with the base timing of 0, what am I really at?

What am I really at when im at when im at a base of 5 degrees BTDC and logger says 20?


The computer assumes that the ignition timing that it is trying to run actually is happening. It isn't adding or subtracting any base offsets. In actuallity, when you lock the timing at 5 degrees by grounding it and then set it at 5 degrees with the timing light all you are doing is making sure that what the ECU says it is running actually happens. When you lock the timing, then it locks to 5 degrees in the datalogger also and you just make what happens at the motor match the computer. You could take the whole timing map and set it at 10 degrees or whatever and then hold the rpms at 1500 and sync the engine timing to the ecu timing that way also. So with correctly synced timing, if the datalogger says 20 degrees under boost, then thats what should be hopefully happening at the engine.