Built my car and it has been running fine the past month and a half. And now it sucks!!! It starts and idles fine, but when I go to take off it will boog out. Then I will push in the clutch and I will be able to rev it up. When it boogs the boost gauge still goes up and the air/fuel goes all the way to lean. My car is tuned rich, so that is weird that it is lean. I can only go to like 1500 RPM with a load and then it will boog out. I put a new cap and rotor still sucks.

Here is my setup

apexi t28 turbo- just had checked out and everything is good.
Precision turbo injector- Brand new month and a half old
Hondadata-month and a half old
NGKr7e11 spark plugs- have probably 10,000 miles on them
new valve cover ground, new battery ground, haven't replaced the tranny and thermo grounds yet
fuel pump has probably 10,000 miles on it


Could it be a ground, injector, plug, coil,?????????????

Oh and I have put about 1.5 gallons of race gas in it the past 2 times that i filled up, could that have anything to do with it. Any suggestions would be greatly appreciated, and If anyon ewould like to buy it let me know

 

o2 sensor.....

 

race gas as in 100 octane unleaded or leaded race gas??

 

Start with the easy suff.. plugs and wires... I know this may sound crazy but 10,000 miles on the plugs is a lot for a turbo'd car. Myself and friends of mine go through plugs once a month with our turbo'd cars. Plus you ran race gas and stuff. I would say time to change the plugs.

 

check all vaccum line~

 

i vote plugs

 

Where do buy those NGK plugs

 

any auto parts store. Ask for BKR7e or BKR7E-11. It's the same thing only one is pre-gapped. Gap them to .030 and your set.

 

OH and there is no check engine light coming on so O2 sensor is out of the question, all of my injectors are testing out the same, and my 4th plug smells like gas. I checked all of my intercooler piping for any leaks and it all tests good. My fuel pump is kicking on and I am getting fuel pressure. Just for kicks I am going to put on a new fuel filter, and try plugs and hopefully that will work???? Any other opinions would be great appreciated

 

did you run a compression test at all?

 

no I didn't, a friend suggested that to me today, So I will try that tommorrow.

 

well if you ran leaded gas you could possibly have fouled out the o2 sensor. and if the hondata is running closed loop enabled than that could be it. because you would be running off the o2 sensor and it could possibly be fouled out.

i run uberdata and i had a similar problem occur. i changed it to closed loop disabled and the problem was solved.

its worth a shot.

 

running rich is not good for your plugs..Not good for any power either. Also what fuel pressure you running ? How is the timing.. Just trace all the steps till you figure it out. Yeah turbo cars can be picky so you gotta stay up on the game.

 

check your plugs. make sure theyre gapped to .27-.30. get new ones...

 

i've had o2 sensors fail and not trip the CEL. doesnt hurt to check it anyway, that race gas is hell on them. check the gap on that 4th plug, i bet thats ur problem.

 

I tried plugs and a fuel filter, and that didn't work!!! I am going to try a dizzy tommorow and hopefully that works.

New info....

When I hit the gas amd rev it up quick it is fine, but if I take it up to like 3000 and hold it steady it will stay there for a couple seconds then bogg down to like 1000, then rev back up to 3000 then bogg then go back up and so on and so on.

I don't know if it did that before because I didn't try!!

I don't know if that will help. And the timing I think is 14BTC, I had it tuned at ELITE so I really don't know?? sorry

I am on a buddy's screen name if you are wondering

 

And I am not running super rich just conservitive enough so that I will not detonate or anything will blow up

 

Is vapor lock a possibility? If so how can I check or get rid of it?

 

Need to find someone with a real scan tool, not the little code eraser ones a real scanner to moniter whats going on with your ignition marks described, map,injector pulse, TPS.O2 voltage, everything so you can help pin this problem down... Good luck.....

 

I will try the O2 sensor when the parts stores open up. It isn't the dizzy!

 

check grounds. I had a similar problem...turned out to be a ground to my fuel pump. Id take right hand corners and the **** would die on me. Also... under any load the car would pop studder and not want to go anywhere. sucked major *******.

 

FIGURED IT OUT!!!!!!!!

Damn TPS!!!!!!

runs like a champ now after speding money on crap that I didn't need. But thanks a lot for all your guy's help. I'm sure I'll be back when I have my next problem!!