Fitzter's 2004 Turbo Colorado

Fitzter's 2004 Turbo Colorado

Postby limequat » Sat Jul 18, 2015 9:44 am

Here's a cool truck that I had the honor of working on. It's a 2004 Colorado I5 turbo and manual trans.
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Fitzter just took it to the dyno to iron out the tune. We wound up with 321 HP 352 LB-FT at 11 PSI.

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Re: Fitzter's 2004 Turbo Colorado

Postby Mode$6 » Sun Jul 19, 2015 8:54 am

Nice. My 2900 project has been stagnant for a while do to being crazy busy, but we had a GMC short box reg cab 4x with a stock 5.3 come to the shop with a bad trans. Then we pop the hood an there is a BW S475 under it!! Turns out it's running E85 at 12 psi. Fast forward $4000 worth of 4l60e bits, we are road testing with a line pressure gauge, tweaking shift scheduling parameters, my buddy mats the throttle, the boost gauge jumps to 23 psi, cause the wastegate rusted shut. Man, that thing flies! Really got the itch to get some 90 lb injectors and a Holset hx 30 and run it on the corn squeeze now.
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Re: Fitzter's 2004 Turbo Colorado

Postby AutoRoc » Tue Jul 21, 2015 11:09 pm

Cool truck, looks like he's not local though..... My H3 has a slight exhaust leak when cold....what better reason than that to install a turbo ready exhaust manifold!

Any more info? Turbo size? Injectors? What rpm did it make boost at? Intercooled?
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Re: Fitzter's 2004 Turbo Colorado

Postby limequat » Thu Jul 23, 2015 8:44 am

AutoRoc wrote:Cool truck, looks like he's not local though..... My H3 has a slight exhaust leak when cold....what better reason than that to install a turbo ready exhaust manifold!

Any more info? Turbo size? Injectors? What rpm did it make boost at? Intercooled?


He's got a build thread here:
http://www.355nation.net/forum/projects ... oject.html

Mods list:
Supermod ported and polished throttle body.
Supermod electric fan.
Borg Warner/AGP S256sx turbo.
Tial 50mm BOV.
Tial 38mm wastegate.
Siemens #80 injectors.
Walbro 450 fuel pump.
Vibrant oil catch can.
K&N pod filter.
Front mount intercooler.
Innovate Motorsports SCG-1 boost controller.
Tuned by Limeswap with HPTuners.
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