Car is taking too long to brake torque

[autotalon]

Last year I had no problem getting the car to stall up on the line. This year its being a real pain in the ass. I don't know why its taking so long now. Its taking 15-20 seconds to get it above 10psi, which is where the whip starts. I like to launch at 20+psi.

According to my logs the engine goes up to 2500rpm no problem, then it sits there at 4psi and climbs VERY slowly. I can watch my trans temp climb like crazy while I'm waiting for the boost to build. I will NOT use nitrous on this car so that is out.

I have a re stalled stock converter that is supposed to be in the range of 3500-4000rpm. I am running a bastard 16g turbo, and DSMap. I have tried a few things like leaning out the fuel in the range it gets stuck at, in order to increase the torque. I have also both increased and decreased the timing to no avail.

I am starting to think that the trans is slipping or going south in some way. It has 240k kms on it, but has a shift kit and end clutch upgrade. It shifts really good while going WOT though.

The other thought I have is that the stall is too loose, but that doesn't make sense because it was fine last year and nothing has changed other than a re tune and a little more power.

What other options do I have to stall the car faster. 2 step? how does it work? I have a DIS-2 unit with that option.

Please help!

 

[jimmythesaint]

I had problems building boost on the line last year and it turned out to be a couple boost leaks. Infact, my intercooler had busted a seam and I could only build 6lbs on the line.

I got a miserable 2.5 sec 60 foot, but still hit 110 mph at the trap.

 

[joyfil2001]

The smallest leak, whether it be boost or exhaust, will KILL your ability to brake boost.

 

[blktalon3]

I've got a pte6152r, and I can build up 20 psi on a stock converter in 16 seconds. I've got a small boost leak around my TB. I run Jackal also. The last time I went to the track I couldn't brake boost at all, but I tuned the affected areas and got to where I'm at now. Not sure but I would probably say its in your tune, just my opinion.