4.8 silverado rear mount turbo tunning?

[bpt tunning]

ok i got a 2007 new body style 4.8 silverado installing a rear mount turbo on the week end, trying to keep stock injectors for now. my quetion is what should b changed fuel control,airflow etc, in order to boost at least 5 psi of boost

[GeoffH]

Good luck on the install, I am also looking into doing the same thing to my 09 Silvy
What kit are you going with? There are some vids on you tube with the install.

I would think that you would need to tune in the MAF, add fuel and watch your timing.

http://www.youtube.com/watch?v=LnbpJ4i5I7o

http://www.youtube.com/watch?v=4i1nt7hNESQ

[bpt tunning]

not a kit im building it myself

[denmah]

me and my friends built that kit in the video

only took about 58 hours 3 day weekend

[denmah]

actually still waiting on HPtuners to get back to us on an issue we have, where the PCM commands a 12.2 afr over 12,700 hz or so, waiting for them to support a map OS or something,

we are stuck around 12psi or we go lean

[GeoffH]

Thats what i was wanting to do also, is to build my own.

Hey denmah, im the one that had subscribed to you on youtube and asked a question about the turbo kit. name is 88coupe50

also, a lot of people are having to upgrade the MAP sensor to a 2bar, have you done that with Corey's truck?

a local corvette builder here were im at put on a sts twin turbo with 5-6 psi on a ZO6 which only dyno'd a little over 600, and installed the 2bar map and was able to tune it better and gained near 40-50 more HP.

here is the ZO6 without the 2bar MAP http://www.youtube.com/watch?v=OQeeAkvvRoQ

still had to work the bugs out, and this was the 1st and 2 pull n new engine http://www.youtube.com/watch?v=UiG9JmAxjus

[bpt tunning]

and what paramaters u guys using on hp tuners to tune with boost on stock injectors?

[carlrx7]

ditch the maf get a 2.5 bar map sensor crank up the boost and tune SD.

[skalor]

ditch the maf get a 2.5 bar map sensor crank up the boost and tune SD.

Kind of hard to do when there is no real VE table and they don't have a 2.5 bar patch for that OS yet.

[christopherstone]

Kind of hard to do when there is no real VE table and they don't have a 2.5 bar patch for that OS yet.

Im in the same boat...you can use BlueCats EQ <> VE program to make a "virtual" VE table using the coefficients, then apply your AFR Error % to that table, then use the program to generate new coefficients to put into your calibration.

Search for Bluecat(sp?) maybe its "Blucat"...Im not sure but the program is called EQ <> VE...check it out!