Intermittent Problem with Reverse

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NEW!!!

I will make one calibration change for an additional $100 per change. For example, changing a shift point for a given gear is $100 vs changing a shift point and a pressure setting would be $200. That value can be used towards the full custom tuning price.

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Tue, 07/08/2014 - 21:52

#1

Tripp

Intermittent Problem with Reverse

I have a problem maintaining brake control in reverse which mostly shows up on hot restarts (about 50% of the time), no problem on cold starts. First gear will do it on very rare occaisions. I start to lighten up on the brake and the engine loads up, vacuum drops to about 3 lbs vs. 7 lbs. and rpms down from 700 to 500, and the truck wants to fly and it takes everything i got to hold brake control. I had a 2500 triple disk stall and took it back out and is now 2800 stall. That seemed to help some as 1st gear has substantially been tamed down and reverse is a little better. Tune attached and setup on what use to be 2010 Avalanche below. Its a MAF only tune right now with plan to do Bluecat SD tuning in near future. Help appreciated as its my daily driver and scarey in parking lots right now.

Forged AES390

Mast LS3 12 Degree 4.00-4.070 Med Bore CNC

222/236 .604/.604 116 LSA +5 Advance

TVS2300 ported w/ 2.7 pulley & HD tensioner

ID1000 Injectors (returnless system)

Built 6L80

Triple Disk Stall 2800

TruCool 40k

ARH 1-7/8 Headers into 3.5 magnaflow exhaust

3 Bar MAP sensor (12592525)

Stock air box, MAF sensor, and maggie tube

Mighty mouse catch can with dual inlet (extra passenger side valve cover in place of drivers side [no orifice] and vented valley cover to can).

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Click on the "SUBSCRIBE" tab to sign up. I will not respond to technical questions unless you are a paid subscriber. Calibration and Config files will not open directly from the site, they must be downloaded to your computer in order to open.

NEW!!!

I will make one calibration change for an additional $100 per change. For example, changing a shift point for a given gear is $100 vs changing a shift point and a pressure setting would be $200. That value can be used towards the full custom tuning price.