TBSS 4L60e to 4L80e T42 Swap

[joecar]

I think it's in the E67.

[Mike@Vengeance]

From a 20mph kick the truck will break your neck

Dead Stop the TB closes to 50% or so and I loose a whole bank of fuel

[ScarabEpic22]

Why do you have the VATS disable patch applied? Its in a stock truck...Id start with reverting it back to the Not Applied state and full flash the tune.

Are you using ID1000s? If so, why aren't you using their supplied injector data? Your IFR shouldnt be maxxed out, scale it using the ID1000 spreadsheet. You're going to have to scale the tune more than 50% using 1000cc injectors, even scaled 50% the high kPa values are over 7.9999. 40% looks like it might work, but that makes interpolation a lot trickier. 25% should work, but you might lose too much resolution in the spark tables.

Look at the WOT Stop and 20mph roll.efi file, you get 4* of knock on tip in and a max of 7* plus your WBO2 goes to a wacky reading (not sure why). But on the TBSS Fail 2013 2.efi you dont get any, nice.

So to recap, this is a 07 TBSS body with a 430ci LS3 and a Procharger. Are you using the 2 Bar VVE or 3 Bar VVE? Looks like a 180* tstat. What throttle body are you running? Stock TrailBlazer/truck? Gold blade LS3/7? Silver blade LS2/3/7? The throttle is closing under these off the line WOT runs, with some blowers they can actually push the blade closed.

I highly doubt this is an 80E related problem, there are tons of guys running the stock E67 OS and either the stock TCM OS modded like you have or with a custom 80E T42 OS.

[Mike@Vengeance]

Why do you have the VATS disable patch applied? Its in a stock truck...Id start with reverting it back to the Not Applied state and full flash the tune.

Are you using ID1000s? If so, why aren't you using their supplied injector data? Your IFR shouldnt be maxxed out, scale it using the ID1000 spreadsheet. You're going to have to scale the tune more than 50% using 1000cc injectors, even scaled 50% the high kPa values are over 7.9999. 40% looks like it might work, but that makes interpolation a lot trickier. 25% should work, but you might lose too much resolution in the spark tables.

Look at the WOT Stop and 20mph roll.efi file, you get 4* of knock on tip in and a max of 7* plus your WBO2 goes to a wacky reading (not sure why). But on the TBSS Fail 2013 2.efi you dont get any, nice.

So to recap, this is a 07 TBSS body with a 430ci LS3 and a Procharger. Are you using the 2 Bar VVE or 3 Bar VVE? Looks like a 180* tstat. What throttle body are you running? Stock TrailBlazer/truck? Gold blade LS3/7? Silver blade LS2/3/7? The throttle is closing under these off the line WOT runs, with some blowers they can actually push the blade closed.

I highly doubt this is an 80E related problem, there are tons of guys running the stock E67 OS and either the stock TCM OS modded like you have or with a custom 80E T42 OS.

Yeah I also highly doubt its a T42 issue. The car is using a 3bar sensor with a 90mm TB. I have tried switching TBs back to stock with no luck and injector also 850 to 1000.

I can redo the tune with a different IFR scale tomorrow that should not take long the rest of the data should be good. I can then rescale the VVE table. I'll take out the VATS patch when I am doing that.

I have had so many different tunes in this thing and tried so much different stuff.

Truck starts and runs fine. Shift good also but I can not get BANK 1 to hold a good clean AF from a hit.

[Mike@Vengeance]

And yes 430 15 PSI procharger

twin intank 340's

Holds FP and both pumps are working.

[joecar]

Try swapping the O2S left/right.

[ScarabEpic22]

Yeah I also highly doubt its a T42 issue. The car is using a 3bar sensor with a 90mm TB. I have tried switching TBs back to stock with no luck and injector also 850 to 1000.

I can redo the tune with a different IFR scale tomorrow that should not take long the rest of the data should be good. I can then rescale the VVE table. I'll take out the VATS patch when I am doing that.

I have had so many different tunes in this thing and tried so much different stuff.

Truck starts and runs fine. Shift good also but I can not get BANK 1 to hold a good clean AF from a hit.

I know what you mean, troubleshooting mode = throw the kitchen sick at it trying to figure out whats wrong.

And yes 430 15 PSI procharger

twin intank 340's

Holds FP and both pumps are working.

Nice setup, Im going to go a little tamer for mine.

Try swapping the O2S left/right.

Good idea, might show if its an O2 or actually the bank is getting starved.

[Mike@Vengeance]

Okay I took the blower belt off. Ran a bunch a more test. The car still loses Fuel on Bank 1 then followed by bank 2 on the blower.

I took the belt off and ran the same the test. ALL go I can go from a dead stop and roll with no issues.

This leads me to beleive its in the Fuel System but I have already put a Fuel PSI gauge on it and ran it WOT under boost and its fine.

Can I lose Fuel on 1 bank and still have Fuel PSI at the Regulator. The Regulator is after the RAIL?

I am running twin 340's from Lonnies Performance with a RSI harness?

[ScarabEpic22]

So to clarify, without the blower hooked up, from a STOP it runs just fine? As in no dropping the Bank 1/2 fueling?

Sounds like if this is the case, you simply arent getting enough fuel to the engine. What size are your feed lines TO the fuel rails?

[joecar]

Swap the injectors left/right across banks.