you can go turbo with the stock ecu. the piggyback is a good question i think they are developing the turbo version but no one really knows for sure yet

 

you guys have been a great help to me Thanks so much.

i won't buy the header if the CEL can't be fixed correctly

 

MIL = Malfunction indicator Light. The pigg back, at least i think, is not supposed to be for turbo since it changes the air/fuel ratios to lean out more, hence more power for NA. For turbo, thats a no no. But I do believe their coming out with one for the turbo. hope this helps.

 

i had a bad o2 sensor for almost 6 months and did not blow up. if the ecu thinks some thing is super wrong it will send extra fule.
after i got a new os sensor my gas milage came back

 

yeah, i would just give them a call. those guys will have all the answers you need.

 

and another thing after i changed the o2 senser my cel turend it self off

 

burn up a cat with the ecu telling it to send more fuel

 

i would but i work 12 hour days, it really hard for me to get ahold of people, unless they are open weekends

 

what cat,
i dont have any
header, turbo, testpipe , and custom "catback"

 

well hopefully they'll return your email, good luck. hope you get your car running like you want it.

 

call them on sat.
someon is usually there til 3pm

 

so you deleted all cats,

i thought the testpipe deleted 1 of the 2

 

well it isn't my lancer, its my girlfriends.

i got a 01 svt lightning, but i'm bored with modding it.

also before you say anything she is paying for everything i mod on her car

 

the header deleted the other one the stock header on the us lancer has a small cat for some stupid reason

 

oh, so what is the downfall of using the header?

any problems ?