Percision 5457RB Turbo Swap Complete!
Senior Member
Joined: 09-28-08
Posts: 588
Likes: 0
From: Long Island
next quick question, if i got the dejon ic,piping, intake and got some other dp and ehaust, gm tage kit and tuned on top of that, but then 6 months down the road I wanted this turbo, what else whould I need to do to slap it on?
Also out of curieosity(sp?) the bends coming out of the dejon IC are right angles, where other companys go with smooth curves, I know it is better to have a smooth curve, but how much of a difference is it really going to make?
Also out of curieosity(sp?) the bends coming out of the dejon IC are right angles, where other companys go with smooth curves, I know it is better to have a smooth curve, but how much of a difference is it really going to make?
Thread Starter
Senior Member
Joined: 08-28-07
Posts: 755
Likes: 0
From: columbus
thanks for the post. I was going to e-mail brain for the pdf. no smoothing. as soon as dave has the kit ready I can tell you what you do and dont need. there is very min. increase in power if at all from one or the other. they are all the same size. I can't say how much because there is no flow tests...
Thread Starter
Senior Member
Joined: 08-28-07
Posts: 755
Likes: 0
From: columbus
Senior Member
Joined: 03-22-07
Posts: 1,116
Likes: 0
From: Texas
wait your making 371whp on a turbo cobalt with a intercooler and piping upgrade, turbo upgrade and tune?? holy **** i need to consider trading mine in. haha hey and whats this gm stage upgrade kit yall are talking about for the ss/tc??
Senior Member
Joined: 07-25-08
Posts: 12,450
Likes: 6
From: Florida
I will def. have some vids. got to love almost 400wtq in the snow. lol.
the setup is made by dejon. being he has not released the kit yet I don't want to give wrong info. I know you will need the elbow fom the turbo to intercooler pipe and I am sure if anyone wanted an adapter for the stock are box it could be done. This turbo needs air and lots of it!
the exhaust is all stock. once I get thos cats. out I will def. hit 400 as it sits now. I will be running 25-27 psi on 94 octane and pure meth. I will see 450whp or maybe even more. this will be done on stock sensors. now gm kit needed in my book.
I would just get a kit and have it tuned. your prob. going to hit 400whp with let say this kit and an exhaust on 22 psi. so if you want to go above that you got to by gm kit or get creative...... once I go back to the dyno I will push the rev limiter up as long as I am making power.
as of now the turbo takes a min. to spool. once its spooled and your hammering the gears the power is right there. your shifting right into peak tq. which makes for some REALLY hard pulls in each gear.
the setup is made by dejon. being he has not released the kit yet I don't want to give wrong info. I know you will need the elbow fom the turbo to intercooler pipe and I am sure if anyone wanted an adapter for the stock are box it could be done. This turbo needs air and lots of it!
the exhaust is all stock. once I get thos cats. out I will def. hit 400 as it sits now. I will be running 25-27 psi on 94 octane and pure meth. I will see 450whp or maybe even more. this will be done on stock sensors. now gm kit needed in my book.
I would just get a kit and have it tuned. your prob. going to hit 400whp with let say this kit and an exhaust on 22 psi. so if you want to go above that you got to by gm kit or get creative...... once I go back to the dyno I will push the rev limiter up as long as I am making power.
as of now the turbo takes a min. to spool. once its spooled and your hammering the gears the power is right there. your shifting right into peak tq. which makes for some REALLY hard pulls in each gear.
The ECM will not allow you more than 3 seconds of 25-27 psi before it shuts you down. 22.5 psi is the highest total pressure the ECM will allow unless you get the GM kit with the reflash.
Thread Starter
Senior Member
Joined: 08-28-07
Posts: 755
Likes: 0
From: columbus
Senior Member
Joined: 05-30-08
Posts: 819
Likes: 0
From: San Clemente, Ca
you need map clamp which prevents the computer from ever seeing your map maxing out. in which case you will then need a boost controller until hpt gives us the boost solenoid signal control.
Senior Member
Joined: 08-05-07
Posts: 1,779
Likes: 0
From: pa/jersey
Senior Member
Joined: 03-22-07
Posts: 1,116
Likes: 0
From: Texas
thats a gm warrantied kit? pretty impressive. but what did this guy on this thread do to get 371whp?? just turbo upgrade, piping, intercooler, tune and meth?
Senior Member
Joined: 10-02-07
Posts: 7,637
Likes: 0
From: Right here, Ohio
Damn you and your small ass pics 
Fixed,
Looks awesome
small changes were made to cam tables with no change in power or power curve. cam timing was set back to stock because I saw no change. I am trying to get the specs for you. they don't have the turbo on the site so I am waiting on a reply. precision stated this is what I wanted... as soon as I get some specs I will let you know. anyway here are some pics.
look what I got today spec stage 3+ w/flywheel and H&R race springs!!
I am by no means done! I too am still learning cam timing on the lnf.
look what I got today spec stage 3+ w/flywheel and H&R race springs!!
I am by no means done! I too am still learning cam timing on the lnf.
Fixed,
Looks awesome
Senior Member
Joined: 03-22-07
Posts: 1,116
Likes: 0
From: Texas
Senior Member
Joined: 10-08-06
Posts: 3,043
Likes: 0
From: Scottsdale, AZ
Senior Member
Joined: 03-22-07
Posts: 1,116
Likes: 0
From: Texas
god damn, i didnt realize they were that easily capable. i guess i havent really done any research. im going to see about trading/selling mine for one. what rpm's do you have full boost? and hows the transmission/drivetrain on them compared to the ss/sc?
Senior Member
Joined: 12-17-06
Posts: 1,164
Likes: 0
From: Michigan
Trans is the same as the SC, just a better clutch. I'm near the 400 mark and no stock clutch slip yet.
Senior Member
Joined: 08-13-05
Posts: 5,733
Likes: 1
From: the glove
dam good reason you've got that spec!!
Senior Member
Joined: 03-22-07
Posts: 1,116
Likes: 0
From: Texas