VNT 17/22 Smokes a bit Much Acceletaing

Joined
Oct 29, 2013
Location
Oregon
TDI
1991 Transporter TDI
I installed a 17/22 recently in a 98 AHU with Malone tune stage 2. I'm using Bosio DLS1019 injectors. I notice when I shift into 3rd especially, I get a lot of smoke for a couple of seconds. Or when I accelerate hard.
I didn't get this with my K14 turbo, same tune.
During acceleration I'm seeing about 16psi boost. My ECU will top out at 21. Any ideas as to getting rid of the black smoke during acceleration?
I do like the power band and low EGT's
Thanks
 

Lex4TDI4Life

Top Post Dawg
Joined
Jun 22, 2006
Location
NorCal
TDI
2001 Golf-Ute TDI GLS 5spd Manual
That's a pretty different turbo compared to your old one. I would wager you need to be retuned.
 
Joined
Oct 29, 2013
Location
Oregon
TDI
1991 Transporter TDI
Oh it had to be re-tuned. The k14 is a waste gate turbo, and the VNT is vacuum controlled. I have to use the N75 valve to run the VNT.
The power is good just the black smoke at throttle.
How about more boost? Would that help with the smoke?

Thanks
 

UhOh

Top Post Dawg
Joined
Dec 24, 2014
Location
PNW
TDI
2000 & 2003 Golf GLS (2005 Mercedes E320 CDI)
Too much fuel or not enough air, take your pick. Sounds like you need to concentrate on your low boost issue.
 
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