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Old 17-02-2015, 02:48 PM
HYDE16 HYDE16 is offline
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Join Date: May 2014
Location: Morris County, NJ
Posts: 47
Default Re: Pre and post turbo injection in an audi b5 s4

Quote:
Originally Posted by parmas View Post
I have been working on it and tested it.

Currently injecting 350cc post turbo and 50cc pre-turbo @ 10psi till 18psi.

Ambient temp is 15C. Injecting 400cc @ 18psi result 35DegC on first run climbing to 45DegC on consistent runs.

After throttle is closed and cruising, air temp keeps a steady 15-20DegC. Note this is all without intercooling.
The crazy thing is that with water injection I am loading engine on boost from almost stoich at low boost while from 10psi+ running 13.5AFR and lots of advance !

Now I am working on wheel alignment issues so until then... no updates.

Next up... increasing Pre-turbo injection to 150cc total of 500cc
Is there a way to block the post turbo jet to see the effects of only the pre-turbo? I'm installing a .3mm pre-turbo to start but I forget what the cc rating is.
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