6.0 Turbo build
#193
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Join Date: Dec 2011
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try granite state for yor tune. ive been very unsatisfied with dons work tuning wise as also is the same with my friends from up here. heard granite state is amazing to work with and they will tune a 671 blow big block to a supra to any ls powered anything fwiw
#195
TECH Enthusiast
Thread Starter
So I think I found my issue with my wastegate, its got a little toasty
Those yellow plastic pieces have never melted before
I took it apart some more and there was no lubrication left and all the white residue in it, so I cleaned it all out and put some new grease in there
Aside from that the new turbo went on good, put some an fittings on my oil drain too so it'll come apart easy now
Got my new boost controller in too
So my plan is run 12 psi now
Trucks down at the tuner now and he'll hopefully get it done by the end of the week
Those yellow plastic pieces have never melted before
I took it apart some more and there was no lubrication left and all the white residue in it, so I cleaned it all out and put some new grease in there
Aside from that the new turbo went on good, put some an fittings on my oil drain too so it'll come apart easy now
Got my new boost controller in too
So my plan is run 12 psi now
Trucks down at the tuner now and he'll hopefully get it done by the end of the week
Last edited by GRRR65GTO; 05-19-2015 at 09:35 PM.
#196
TECH Enthusiast
Thread Starter
So I got the truck back and WOW what a difference. It just barely stays hooked up in 1st gear now I love it
Don put it to 10, he said it seems happiest there and Id agree since at 12 I only gained 10 hp and 5 ft/lbs torque, I dont know why, maybe the turbo is out of its efficiency there. He was also confused about why the power falls of in the upper rpms, on lower boost it doesnt do that. He said the cam may have been degreed? Which I didnt know you could do with our motors
The the three numbers are
Torque
HP
Boost
This was also only done in 2nd gear
He also said going down the road the longer you hold it open the higher the IATs get so maybe I will get that 4" IC
All in all im still wicked happy with the new turbo
Don put it to 10, he said it seems happiest there and Id agree since at 12 I only gained 10 hp and 5 ft/lbs torque, I dont know why, maybe the turbo is out of its efficiency there. He was also confused about why the power falls of in the upper rpms, on lower boost it doesnt do that. He said the cam may have been degreed? Which I didnt know you could do with our motors
The the three numbers are
Torque
HP
Boost
This was also only done in 2nd gear
He also said going down the road the longer you hold it open the higher the IATs get so maybe I will get that 4" IC
All in all im still wicked happy with the new turbo
#200
TECH Enthusiast
Thread Starter
Well its 4wd 2500hd with 33s so im not surprised that its low on power compared to others. And as for backpressure i dont see how it would, its a 3 inch downpipe to a 4 inch duramax catback system