Percision 5457RB Turbo Swap Complete!
I started tuning th beast last night. mind you this is threw the stock downpipe and exhaust. At 22psi or so the car was doing 371whp and 374wtq. the car will def. be well into the 400 range. this was also done without meth. The car is taking a while to spool. 22psi at 4600. peak trq was around 4800. now remember the stock exhaust is on this car which I think is why it takes so long to spool. (too much back pressure). all those who know cam timing please step in. I did 2 degrees advance on the intake (warm)
main table from about 2500 to redline in the last 2 columns and 1 degree retarded on exhaust (warm) main table from 2500 to redline in the last 2 columns. would changing the the whole table be better? I will post a dyno sheet later today!
main table from about 2500 to redline in the last 2 columns and 1 degree retarded on exhaust (warm) main table from 2500 to redline in the last 2 columns. would changing the the whole table be better? I will post a dyno sheet later today!
psykoteve has some wicked tables for the gt30 and 30r kits on the soltice talk to the man he should be able to get you in the right direction. he does mention on hpt that 3 deg. on intake is usually ok.
words from the man himself: listen hes the ****!
As for the cam phasing tables I typically only change them at 100% and 200% airload limits, and above 2,500 rpm. A little advance helps on the warm tables.
3* is not really scary. If you start having misfire issues (common problem on the LNF) then look to change your plugs. Cylinder #3 is prone to this.
words from the man himself: listen hes the ****!
As for the cam phasing tables I typically only change them at 100% and 200% airload limits, and above 2,500 rpm. A little advance helps on the warm tables.
3* is not really scary. If you start having misfire issues (common problem on the LNF) then look to change your plugs. Cylinder #3 is prone to this.
Today I went to Dejon Powerhouse and finshed my turbo swap! All I can say is WOW!
Though the tune is still under developement the car really feels strong! Here ar some specs on the turbo and related parts.
Percision 5457rb (its percision new "50 trim" replacement)
500hp rated
T31 series with better spool and less back pressure = more HP!
"54 refers to the compressor inducer
dia. and 57 to the turbine wheel inducer dia. It uses their latest billet
turbine wheel which is more aerodynamic for faster spoolup. R is for ball
bearing center-section and B is the compressor cover."
Full Kit Info will be aval. soon. Pics Monday!
Though the tune is still under developement the car really feels strong! Here ar some specs on the turbo and related parts.
Percision 5457rb (its percision new "50 trim" replacement)
500hp rated
T31 series with better spool and less back pressure = more HP!
"54 refers to the compressor inducer
dia. and 57 to the turbine wheel inducer dia. It uses their latest billet
turbine wheel which is more aerodynamic for faster spoolup. R is for ball
bearing center-section and B is the compressor cover."
Full Kit Info will be aval. soon. Pics Monday!

question are you starting to see the limitations of the stock injectors?
and may I make a sugestion since no one makes aftermarket injectors for our cars yet.
Saw a car a while back that was using the stock fuel system but had a mega squirt system piggybacked and controlling its own set of four injectors.
I know this is a DFI engine but there is another member here who has done this but he removed the stock injectors as well i believe.
and may I make a sugestion since no one makes aftermarket injectors for our cars yet.
Saw a car a while back that was using the stock fuel system but had a mega squirt system piggybacked and controlling its own set of four injectors.
I know this is a DFI engine but there is another member here who has done this but he removed the stock injectors as well i believe.
its not the limit of the injector you need to worry about. thats not the key.
cam table changes sound like a guess
post specs-
cover AR, turbine AR, EXD/IND of both wheels, compressor and turbine graph, ect. for all you know you might have picked an entirely wrong turbo.
as for the spool, your exhasut is not causing a 1600-1800 RPM spool delay.
whats the output flange of the turbine?
cam table changes sound like a guess
post specs-
cover AR, turbine AR, EXD/IND of both wheels, compressor and turbine graph, ect. for all you know you might have picked an entirely wrong turbo.
as for the spool, your exhasut is not causing a 1600-1800 RPM spool delay.
whats the output flange of the turbine?
its not the limit of the injector you need to worry about. thats not the key.
cam table changes sound like a guess
post specs-
cover AR, turbine AR, EXD/IND of both wheels, compressor and turbine graph, ect. for all you know you might have picked an entirely wrong turbo.
as for the spool, your exhasut is not causing a 1600-1800 RPM spool delay.
whats the output flange of the turbine?
cam table changes sound like a guess
post specs-
cover AR, turbine AR, EXD/IND of both wheels, compressor and turbine graph, ect. for all you know you might have picked an entirely wrong turbo.
as for the spool, your exhasut is not causing a 1600-1800 RPM spool delay.
whats the output flange of the turbine?
im still learning about the cams i have an idea on how they work and all but i dont have dyno so i dont know when the changes arent doing anything anymore. i just have butt dyno so i keep my changes to cams small. from what ive heard i think he has more room with the cams but if it dont change agreed turbo prolly to big. i want to see this kit work out so hope adjustments bring it back into play.
its not the limit of the injector you need to worry about. thats not the key.
cam table changes sound like a guess
post specs-
cover AR, turbine AR, EXD/IND of both wheels, compressor and turbine graph, ect. for all you know you might have picked an entirely wrong turbo.
as for the spool, your exhasut is not causing a 1600-1800 RPM spool delay.
whats the output flange of the turbine?
cam table changes sound like a guess
post specs-
cover AR, turbine AR, EXD/IND of both wheels, compressor and turbine graph, ect. for all you know you might have picked an entirely wrong turbo.
as for the spool, your exhasut is not causing a 1600-1800 RPM spool delay.
whats the output flange of the turbine?
look what I got today spec stage 3+ w/flywheel and H&R race springs!!
im still learning about the cams i have an idea on how they work and all but i dont have dyno so i dont know when the changes arent doing anything anymore. i just have butt dyno so i keep my changes to cams small. from what ive heard i think he has more room with the cams but if it dont change agreed turbo prolly to big. i want to see this kit work out so hope adjustments bring it back into play.
Last edited by boostking; Jan 13, 2009 at 07:53 PM. Reason: Automerged Doublepost
Man, that install looks VERY clean! So this swap will work with all of the aftermarket parts and the stock parts? You plan on running the redline up? Also, this turbo swap kit is made by Dejon correct?
so u dont have a dp or exhaust right? So then after you get the dp and exhaust, after that you could be at 400whp 400wtq ..... what would be needed to see higher numbers after that? Also is this gonna benefit from the gm stage kit? Or should I get all the stuff and just tune it? I have alot of money saved and am SOOOOOO confused what I should buy
so u dont have a dp or exhaust right? So then after you get the dp and exhaust, after that you could be at 400whp 400wtq ..... what would be needed to see higher numbers after that? Also is this gonna benefit from the gm stage kit? Or should I get all the stuff and just tune it? I have alot of money saved and am SOOOOOO confused what I should buy
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.
Last edited by boostking; Jan 14, 2009 at 08:01 AM. Reason: Automerged Doublepost
yea, dunno how much fun your going to have above 23psi. I'd wager about 3-4 seconds continuous or 40seconds cumulative per key/on.
Dave makes a few regualtors to prevent high pressure form being seen by the PCM. I dunno if he ever got his setup sorted all out, but I was getting quirky behavior when I tried to do the same. He may have fixed it I dunno.
Dave makes a few regualtors to prevent high pressure form being seen by the PCM. I dunno if he ever got his setup sorted all out, but I was getting quirky behavior when I tried to do the same. He may have fixed it I dunno.
yea, dunno how much fun your going to have above 23psi. I'd wager about 3-4 seconds continuous or 40seconds cumulative per key/on.
Dave makes a few regualtors to prevent high pressure form being seen by the PCM. I dunno if he ever got his setup sorted all out, but I was getting quirky behavior when I tried to do the same. He may have fixed it I dunno.
Dave makes a few regualtors to prevent high pressure form being seen by the PCM. I dunno if he ever got his setup sorted all out, but I was getting quirky behavior when I tried to do the same. He may have fixed it I dunno.




