new turbo wont spool

[07metallicgreen]

I just put a double bat 472/83/1.0 on my lbz and I cant get the thing to spool right. the tunes are the same ones on my friends and it does fine. I pulled last night and I only made 4lbs of boost. my intake was leaking around my maf and I sealed that and it helped. I also cleaned my maf and switched it with my dads truck to make sure its working and nothing changed. once it spools it make 45-47lbs. anything I should look for

 

[gmduramax]

What rpm are you trying to spool it at?

 

[07metallicgreen]

I brought it up to around 1800 before it pushed thru the brakes and it stayed there the whole pull. once I was rolling it still never lit. ill try to get a video

 

[Dirtymaxx03]

Looser torque converter may help

 

[paint94979]

Converter converter converter... You might be able to mask the problem with adjusting tuning. Bring the fuel in a little sooner and drop timing to increase heat. Make sure your maf is scaled correctly. What converter is your buddy running?

 

[gmduramax]

I brought it up to around 1800 before it pushed thru the brakes and it stayed there the whole pull. once I was rolling it still never lit. ill try to get a video

I'd say that's no where near enough RPM to lite it.

 

[brandon06dmax]

your converter is way to tight and have you contacted your tuner

 

[07metallicgreen]

he is running a 58 too. I agree that my converter should be looser especially for pulling but that's not what I am after. there is something else wrong. my buddy and I have the same exact tunes from blackout and the same torque converter, same turbo. caleb built his kit and I made mine. Im missing something or something is leaking I just don't know what else to look for

 

[brandon06dmax]

is it a brand new turbo and have you checked for leaks make sure your boot is still on the ic

 

[RPM Motorsports]

MAF in backward?

 

[05chevy]

My 75 wont start to light till it hits around 950*. I also have a turbo blanket that helps. Im still running a ML and have no problem lighting my trubo

 

[hondarider552]

boost leaks? Is the MAF scaled correctly?

 

[sweetdiesel]

I brought it up to around 1800 before it pushed thru the brakes and it stayed there the whole pull. once I was rolling it still never lit. ill try to get a video

U pushed thru the brakes at 1800 and had no boost? R u sure your gauge is right?

 

[sweetdiesel]

If you are sure boost is acuarate then check for boost leaks and then look at maf and tuning

 

[sweetdiesel]

MAF in backward?

I've done that!

 

[ikeG]

it just dozered down the track at that rpm, no smoke, no rpm gain, no nothing. As he said, he had the problem when he first got it going, then found a leak at maf and thought it was solved, so tried pulling last night.

 

[Chevy1925]

If there is no smoke, it's a maf/tune problem.

 

[brandon06dmax]

did you mod your own y bridge

 

[PACougar]

How big around is your intake tube?

 

[SickLL7Crenshaw]

Did your change sizes of intake tubes when you put your new turbo on? Install your MAF correctly? Have you logged the truck? No smoke would say the MAF needs to be rescaled.