Porting 14b Turbo, O2 Housing, Results.

[JohnW]

The information I used to help port the turbo can be found here, along with mucho other information regarding DSMs. I won't reiterate here. Thanks to Tom Stangl

http://www.vfaq.com/mods/porting-turbo.html

These instructions don't include the o2 housing but basically you want to gasket match both sides, and grind the divider down for a bigger opening from the wastegate outlet of the turbo.

Results:

Quicker spool. I hit full boost (15psi currently) very quickly.

Boost creep all but eliminated. With my MBC set to 15psi, I creep to only about 17 max at full tear ass.

Sweet turbo noises. Woooooooosh! heh heh... bonus.

Fully recommended!

[RidinRails]

your turbo makes the noise wooooooosh?

i thought that was the BOV. haha

[JohnW]

ok then.. zzzing? vooom? whirrrr? :rolleyes:

[aliengotpsi]

tell me you have a fuel pump.... 17psi.. stock pump... kaboom

[JohnW]

ya, i have a 190 fuel pump, pocketlogger, socketed ecu, chip programmer, etc.
before i got the 190 and ported i was running at 11 psi spiking pretty bad with a rewired stocker and it was fine, don't know how much more I could've gone with the stock pump though.

[Wizard]

I've ran 21psi on race gas with rewired stocker for years on many different cars. But they were in good shape too, new fuel filters, clean injectors, timing set right, shifting at proper RPMs, etc. 16-17psi on pump was ok most of the time, occasionally we'd get fuel cut. Then back it down to 15-16psi.

Wiz

[aliengotpsi]

For most cars you will get alot of knock at 17psi on stock pump... I had a Stock tsi with boost controller and anything over 15 psi would start knocking bad.... 43 counts. probly wouldnt hurt anything right away but over time it will. It may not knock in the first gear but if you do a pull from 1st -4th gear it will knock alot in 3rd 4th gear...Too MUCH HEAT

My .02