i got my car tuned yesterday and its really smooth all the way through 13....i was running a dc header 4-1 (stock collector) when i got it tuned....today i put on a dc 4-1 (2.5 Collector) my question is will this throw off my whole tuning?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by P73typeR &raquo;</TD></TR><TR><TD CLASS="quote">i got my car tuned yesterday and its really smooth all the way through 13....i was running a dc header 4-1 (stock collector) when i got it tuned....today i put on a dc 4-1 (2.5 Collector) my question is will this throw off my whole tuning? </TD></TR></TABLE>

Yes it will change the tuning, but I dont think its going to be all that much..

 

i heard to bump fuel reg up like 2 points and it should be alright

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by P73typeR &raquo;</TD></TR><TR><TD CLASS="quote">i heard to bump fuel reg up like 2 points and it should be alright</TD></TR></TABLE>

Dont know who told you that.. Only way to tell is to check it with a wideband.. The different header is going to act differently at different rpms than the one you were using before..

 

that car feels stronger than it did after i put on the header so i know thats a good thing but im more worried about the tuning...but im running a sleeved block also and only revin to 8g so its not that big of a deal

 

is it going to throw the air fuel way off from going from a stock collector to 2.5?

 

anyone else know?