So, I installed my turbo kit on my 99 gsr and got it tuned yesterday morning on chrome with a p28, and it ran just fine until about 4 hours later I noticed it bogs in 1st gear all the way through 5,000 rpms then it pulls hard. It also does this in 2nd sometimes. Is this a tuning issue? perhaps a boost or vaccum leak? I cant seem to find any resolving answers to my problem. Though there are many others who have witnessed and experience this problem. My compression is 210 on all cylinders so I know for sure its not a head gasket or internal problem. I also do not throw a check engine light at all. If any one could help it would be appreciated thanks.

 

Bump. Can anyone help??

 

What does your wideband read when it bogs?

 

you know this hapens to me time to time on my pro charged b series ITR. its fully tuned and runs great but every now and then when i start up and take off with out letting it idle to normal (around 900rpm is where my motor idles do to the 550cc injectors) but right at 2000 rpm it bogs then pulls hard at 5000 rpm so when it bogs at 2000rpm i just stop and let the car idle down and steady at 900rpm then i start to take off and it goes away. but i think it has to to with the tune or vacume. but i noticed also it does this if im getting low on fuel and when i start the motor and take off with out letting it idle down.

 

Sounds like the car is running rich from a cold start and when you get to your Vtec you blow a lot more air through to lean it out. But once you get to operating temp. the computer is leaning the system from then on. What size turbo do you have? The larger the Exhaust turbine and the bigger the compressor turbine your boost lag can be higher like 4000 rpm or 4500. The smaller the exhaust turbine is the quicker it spools. What kind of boost controller are you using?

 

Its a t3/t4 50 trim. The bogging occurs typically in first gear around 4700 rmp just before vtec my tuner did another pass with it on the dyno and its completely fine. He seems to think its the coil I feel like its a bad icav. I am running a p28 on chrome.

 

I actually dont have a boost controller he just tuned me on 6 pounds which is the psi on the spring of my tial wastegate

 

Hey, so today I was driving and my car wont go past 4,000 rpm like its stuck in safe mode and it would shut off sometimes just driving. Do you think its distributor related?

 

call your tuner.

 

Yeah talk to the tuner because it sounds like your computer is locked in a loop. If no codes are throwing then the tuner might have bypassed something in the tuning. Your computer has two fuel maps, one for using low throttle before Vtec and a high throttle map when Vtec is ingaged. Sounds like you aren't using your high throttle map. Does it sound like you are hitting a rev limiter or a pulsing of the rpms at 4000?