What have you gapped these plugs out with your new setup? I'd agree that lowering your compression would effect the timing in some way so prehaps it's just in need of a retune?

 

I sure damn hope so, thats its my tune. but myhd plugs are at .28

 

bump for spark plug on 1st page? is it rich lean or ok?

 

should be gettng tuned pretty soon..

 

this is my dyno sheet.. car is bucking at Wot still, my plugs are gapped at .28

 

did you just dyno or tune it?? from lookin at the graph around 8k it looks like your breaking up , detonating

 

nah this is my tune on my stock 290,000 miles b18c1, but im driving on it with my new set up..

 

i think its my tps. it needs calibrating and i need a new tune

 

bump..

 

..

 

did you tune the car yet ??

 

no not yet next week, waiting on my intercooler to arrive tommorow or saturday. just changed my o2 sensor. my intercooler had a bad *** leak under pressure..

 

getting tuned tommorow 9.5:1 cr, stock GS-R head, t3to4e .57, 3inch exhaust should i throw my adjustable cam gears on? im shooting for 380-400whp?

 

if you cams are factory i would leave the stock gears on no need for adjustables ... just another thing in the mix that could go wrong that not needed

 

you are still pushing 12+psi on a stock map sensor?

 

not anymore, i think my map sensor was going bad along with my leaking intercooler, i just put brandnew plugs in and i am runnning a gm 3bar map now

 

update car is idling smooth(Fast idle throttle valve).. still bucks under wot. will update later

 

Ok, so did the car get tuned or not? You keep looking for answers. Your answer was given. Get a wideband. Plain and simple. Then you'll have more to work with. Some things that might cause car to buck or hold back at WOT is the tune, something with the ignition/spark, a clogged cat, or VTEC engaging and disengaging from low oil pressure maybe. Now get a wideband.

 

If you replaced the stock MAP with a 3 bar it will run like crap unless you re tune for the 3 bar. It's amazing to me the car even idles. You plugs are also gapped pretty wide. Gap them for .018-.020 when you retune.

 

i had my gsr tune on 10 psi...crack a sleeve..then a friend try to use my ecu on another gsr same turbo. but with ls crank, built blocka and he melted a piston for been cheap and not tuning..thinkin it was all the same...

 

Its you map sensor, and I would recommend a retune its going to be running very rich you basically hitting what fuel wall at wot

 

you want help? stop driving the **** out of the car and take it to a good tuner asap. you WILL be putting another motor in it very soon if you fail to do so.

its running like **** because its NOT tuned...

 

DONT ask questions if you don't want to listen for answers. You waste everyone's time. If it's bucking, the most common cause with a turbocharged car is massive misfire or detonation. One main cause for both is too rich or too lean.

 

I don't know if you rant guys have read or not(maybe not careully), but this happened way before my new motor. i have went to go get it TUNED the TUNER could not explain what was going on...

 

then find a new tuner