Thread: full throttle problems

So I got my car back together and running after my gen v swap. Had a small vacuum leak but fixed it. Car drives fine until you get on it to WOT. It starts acting like it misfires but my aeroforce says 0 misfires. I checked all wire connections and just cant figure it out. The accelerator pedal seems to be higher than normal and wont go down as far either if that helps. Any ideas?

CAn you give more info?

Like any KR, whats the timing?

What size pulley you running?

KRwas about .8* one time, while part throttle I got a 2*. Timing im not sure. Stock 3.8 pulley. Doesnt do it when in park just in drive. My ltft bank 1 was high at -22.6. Also I didnt get a light but just incase i checked i got a P0172 code. front bank rich code i believe? anything else?

Ok, so you are drowning the motor in fuel. Since you give us no info about your swap...the best we can tell you is look over what you did.

Which TB?
Which injectors?
Which plugs?

See why we don't know anything?

^^^^this...

are you sure you fixed the vac leak?
are you tuning this yourself/at all?

Sorry figured you would have remembered from my last two posts this past week. Yes I'm sure I fixed the leak. Northstar throttle body. Autolite 104s. Stock injectors. Ported lower intake. Lq4 maf. Intense tuned my pcm. I thought it was the plugs but that doesn't explain the dumping of fuel. Is there anything else that you need?

sounds like vacuum leak. how much boost do u get?

idle the vacuum is about 18ish. I cant get into boost or else it starts sputtering/misfiring

whats the FP look like?

Not sure i can check later for ya but tonight my buddy and I started hunting around seeing what to do. I gapped all my spark plugs to .055" instead of the .050" they were, still top end spuddering and i misfire or 2. My friend unplugs the lq4 sensor and car runs perfect except for the 5.5* of knock. Other than that it ran completly fine. Need to clean it? new one? Intense tuned for it when i sent it in. That was all they had to tune was for that sensor so i doubt its bad tune?

try cleaning it but that for sure sounds like a bad maf

ill clean it in the morning and see how it runs. If not is a new lq4 something oreillys would be able to get or is that a dealer only item? A couple people on another forum swear up and down that they think my pcm didnt get tuned or tuned correctly. But i dont see how that would happen since thats all i sent it in for nothing else

who did it?

Intense

I'd search the part number on ebay...saw a buddy get one for .99 plus $5 shipping.

ok ill try that just got done spraying it with some of that crc maf sensor cleaner. If that doesnt work im going to go trade my grandpa maf sensors since his truck has an lq4 motor in it see if the sensor is the problem

It's easier to just unplug the sensor and start it.

out of no where car keeps dying with it plugged in so i unplugged it the second half of the day today. swapped maf sensors today with a known good one and nothing changed in either vehicles. Pretty sure its the tune now so i called intense and now waiting to hear back.

Update* talked to john and he said it got tuned for the lq4 and we checked to make sure the pig tail harness was wired correctly which it was. He is pretty much lost as to what is making my car run like this. i keep forgetting to add the codes im getting as well so here it is:

P0101
P0102
P0113
P0172

What kind of intake are you running. I had part of mine blocked at one point and had the same thing happened.

was running a wizaird until lastnight my buddy bought it off me and i got a 4" metal intake with my k&n cone on it. Its not blocked, nor was the wizaird