ok my modifications are: zzp stage 2, 3.1 inch pulley, 42lbs injectors, step 1 colder plugs, shortened belt. i had my friend eric add some fuel top end a few weeks ago because of a lean issue. NOW my problem is, i can't go more than 25% throttle without my car bogging down, if im on 15-20% throttle im at like 8lbs of boost as oppossed before i would still be in vac. my car is running a little hotter than be4 also, meaning instead of a steady 174-180 degrees, im getting 189-199, my gas mileage went from 32 mph highway to 18 mpg's @ 60 mph. that being said i cant even go over 65 otherwise it wil bog down. on the city haha even worse. on top of that when i come to a complete stop and or arriving to a complete stop in neutral my idle is bobbing and weaving until about 3-5 seconds after being stopped. than it levels out, sometimes the car will also just die at the light . please help me, no engine codes are showing, the car sounds different, like the exhaust is not the same, when i turn the car off i can smell gas fumes. i just want my baby working again thats all...

also, its a 2006 LSJ

also, its a 2006 LSJ

 

smelling gas fumes is a sign of a bad exhaust leak. Fix that first. Then, it also sounds like you have a huge problem with your tune. You may, also, have a vacuum leak (which would explain the bobbing at neutral.

But I'd talk to Area47. He might have a better guess at what is wrong with the tune (if anything).

 

Clogged cat? Get a better tune as well.

 

yea i def think a clogged cat is one of the problems, i might just gut them for now, changing my spark plugs would that help that problem a little bit to keep the car running cooler? i have like 15-20k on the step 1 plugs. im gonna ask my friend to bring me back to my original zzp tune and leave it lean top end how it was initially and i just simply wont race.

 

gut the cat out of your dp. I can delete the codes so you can still get through emissions. Get yourself another set of plugs installed and then get in touch with me and we will sort it out.

 

i changed my plugs today, and ill explain that on the phone dood, Nick is gonna hook it up with gutting the cats at his pops shop so we have a left and what not, annnnd ummm yea ill call you tomorrow dood, maybe we can meet up on thursday or w.e. after work. aight bro thanks

 

Be forewarned, a gutted stock dp car sounds like dick.

 

man as long as she is happy after i gut her cat, idc what she sounds like

 

Thats what i said. I got a high flow cat after 3 months.

 

added info, i did forget to mention i have the N2MB wot box/2 step (hence the clogged cats). and also when i replaced the spark plugs, if your looking at the motor as if u were changing the plugs, the 3rd spark plug hole going left to right, was black. the rest of the spark plug holes were shiney like a mirror. spark plugs did not smell as if it was running rich either...

 

ok i ordered a catless 3inch d/p from zzp w/ wideband bung installed + new gaskets. will this finally stop the issues with my car once installed? plus are already changed, the car is just sitting until the dp is installed. but please read above above what i found while changing the plugs. thank you