SO WOULD NOT HAVING A TUNE AND A SMALLER UNDERDRIVE PULLEY KILL MY GAS MILEAGE I HAVE FULL EXHAUST K&N TYPHOON ADN SAMLLER UNDERDRIVE PULLEY

 

I didn't know you could run the car on different sized injectors with out a tune. lulcaps btw.

Why do you have an underdrive pulley on an ss?

 

its a 2.4 im not sure i need to put the stock one back one they said it would get a bit more power plus it was free with the intake i bought off a guy around town here

 

If you get bigger injectors without tuning you will be running too rcih and probably kill your cat besides getting bad gas milage. Your PCM will comand the same duration for the injector to be open but because they flow more it will put more gas into the cylinder.
Who told you to get bigger injectors anyway? Your stock ones should be fine wtih your current mods.

 

ok he told me the underdrive pulley would call for more fuel so to get my mpgs back to almost stock i would need what? cause 25 mpgs is killing me right now im use to 30to 35

 

No tune with the bigger injectors will def cause it to dump fuel!

 

ok so what is th problem

 

Already been told...

 

Get a new tune or go back to stock injectors.

 

got that but i dont have bigger injectors yet so could anyone chime in and tell me the problem no injectors just stock ones and when i accelerate i lags a little before it opens up

 

If you don't have bigger injectors, why does your first post even talk about them then?!?

 

So wait let me get this straight. First you say you have bigger injectors and then you say you don't. Well if it's the latter and you say you have worse gas mileage and hesitation I would assume you need a new primary o2 sensor. I would also check the plugs to. Without being able to monitor or log the car that's the best advice I can give you for now

 

I thought the same thing.

OP, on your next post. Slow down your typing. Use proper english and tell us what is on the car so we can help.

 

ok i was going to get them but i wasn't sure of it and the primary 02 sensor is the one on the header or dp what about the tb had and issue with reving after i cleaned it i guess the plug got some stuff in it and after that it would rev to like 3 grand and stay there let it sit for 2 weeks in the hot ass florida sun and it went back down but at 60 i can hear it flukuagte(not sure ho to spell that) threw the exhaust any suggestions

 

lets see k&n typhoon intake, full 2.5 flowmaster exhaust from cat back duals, and smaller crank/underdrive pulley and use all synthetic fluids and 93 octane gas cause that is what the manual calls for idk y but that is what it says

 

My intake increased my mpg by 2-3. Exhaust should also help. My guess is you're getting on it more to hear the intake and exhaust.

 

na drive like i normally do went to the track to and ran .5 seconds slower than before
before i had the injen cai,and over axle duals and no pulley

 

ok so whats ur mpg now

 

I have a 2.2 not a 2.4 but before my intake I was getting 37. After I managed 40. Same drive, same time of day, same speed.
Now with my wheels it's gone down a good bit.

 

How many miles? is the filter clean? MAF clean? TB clean? Plugs. check all of the basic stuff first. if there is no chack engine light on there it has to be somthing small. have you had really hot weather lately?

 

Are your new wheels bigger and heavier than the stock ones?

 

i don't have new wheels they are painted stock wheels and my miles are 101000 and i use to get like 35 now i get 25 where do i find the 02 sensors

 

My bad. I didn't read the name. It was for jl-ka.

 

I read this 3 times and I'm still not sure if I got everything you are trying to say.
Did you say you cleaned your TB and then had problems with the idle and with the throttle fluctuating? If so that is where I would start. Might be TPS but I would expect that to set a code. Free thing to try is disconnecting the battery for amlittle bit to reset to base setting. If you haven't killed something on the TB by cleaning it improperly this will reset the idle.
If that's not what your problem is maybe someone else will have better luck figuring out what you said in your post

 

ya i guess when i cleaned it i got some carb cleaner in the plug part and it threw a light but now it dosent so idk would you know if it would be a o2 sensor and without a code idk