dynoed today......

[boostindoo]

mods:gt40, ebay manny, tial 44mm wg, 3''turbo back, stock injectors, walhbro 255, stock ecu, aem truboost ebc, aem wb.

@11.12lbs, boost controller set @12lbs, made 249.55hp and 245trq. its either the wastegate or ignition problems what i can think of, my power drops at 5krpm and is real jumpy on the way down. boost controller turned off made 230hp and 218 trq. with the boost controller turned up to 14lbs, it made 243hp. im running rich. im gonna try to post the sheet. also over 100 degrees.

 

[BlackMKIII]

Let's see the sheet!:ttiwwp:

 

[boostindoo]

 

[tissimo]

seems a little low i would think.. fwiw on 9-10 psi on my t67 i made 290whp

 

[boostindoo]

i think its very low, lol. i think i got wastegate or ignition problems. turned boost controller off and the boost still goes up and down like when i got it on. im gonna pull off my wastegate and sparkies sunday. i dont think stock injectors will be able to handle 14lbs of boost from this turbo, something is wrong.

 

[OneJoeZee]

Somethings definately wrong... I made more power than that on stock twins.

 

[annoyingrob]

Yeah, that's messed up big time. What's your plug gap?

It's a GT40 what? 40-88, 40-82, 40-94? FWIW, my GT40-88 @15psi made 400whp, so you have something up.

 

[Tim]

yah, something must be wrong. I made 272 to the wheels at about 11psi on my Driftmotion Ct26 57trim kit.

 

[boostindoo]

anyone got any idea whats wrong?

 

[The Reaper]

why dont you answer the question about what turbo it is?

 

[Slow_Sc3]

iv got the same problem with my t78 kit iv checked everything coils maps vac leaks it seems anything after 11psi just misses like it goes into a limp mode or something i made 328 and 245 at the dyno on 11psi

iv put everything to stock
iv got NGK's at .28 gap

 

[annoyingrob]

Check the coils themselves for cracks, especially under the rubber boots. If they're cracked, seal them up with some epoxy (or even nail polish).

Check the conenctors going to the coils. If they're cracked or broken at all (like missing their locking clips), replace all 6 (they're cheap). The 2JZ connectors have a much tighter fit then the 1JZ ones anyways.

 

[boostindoo]

yo, my turbo is a gt4088. still havent gotten around to changing the sparkies, pulling the wastegate, and maybe moving the wastegate line to the turbo. got to put a nipple on the turbo. the line is at the manny right now and not sure if it would affect boost. also gonna throw in my jdm 440 just in case this thing gets fixed, i dont want to grenade my motor.

 

[boostindoo]

oh annoyingrob, im gonna check the coils and put nail polish on there. would u recommend any other colors besides clear, i got a whole shop full of nail polish.

 

[boostindoo]

funny thing is when i run it, it doesnt feel like the ignition is missing.

 

[slidingsidewayz]

Check the coils themselves for cracks, especially under the rubber boots. If they're cracked, seal them up with some epoxy (or even nail polish).

Check the conenctors going to the coils. If they're cracked or broken at all (like missing their locking clips), replace all 6 (they're cheap). The 2JZ connectors have a much tighter fit then the 1JZ ones anyways.

do those connector really affect the performance? because all of the locks on my clips are broken and it seems to be running up to par..

 

[MDCmotorsports]

Something isn't happy there....

Running a T66 (HKS TA51) on my supra I made 316RWHP mustang dyno/361RWHP dynojet @ 10psi on stock IC/Lex/550's

 

[boostindoo]

my sparkies seemed good, changed them for ngk 6097 gapped .28 anyways. found a leak on my vband from turbo to downpipe. all coils cracked at screw mounts except for 1. tightened the vband down real good. gonna put epoxy on the coils. will update later. still gonna pull the wastegate. hopefully it was the vband though. later fellers.

 

[1jzMoe]

that seems kinda low to me because my car did 242 hp and 254 stock on twins and just afc neo on a dynapack.

 

[annoyingrob]

do those connector really affect the performance? because all of the locks on my clips are broken and it seems to be running up to par..

Well, I cracked one of the connectors in half, and the car ran like SHIT despite it still being plugged in.. I replaced them all, and it ran 100% better. If it's running well, I wouldn't worry TOO much about it, but if you start having any sort of issues, replace them. It's a commonly overlooked thing. If you have a poor connection to the coils, you get a poor spark out of them.

yo, my turbo is a gt4088. still havent gotten around to changing the sparkies, pulling the wastegate, and maybe moving the wastegate line to the turbo. got to put a nipple on the turbo. the line is at the manny right now and not sure if it would affect boost. also gonna throw in my jdm 440 just in case this thing gets fixed, i dont want to grenade my motor.

I run the wastegate off my manifold too. It CAN cause creep issues, but not usually on such a big turbo (I run a 4088 too). Your boost pressure might actually be slightly HIGHER then running it off the turbo itself depending on how restrictive your intake piping is.