omcar

iTrader: (10)

My 2001 A4 formula has 3.23s and a Vig 3600 converter. I'm worried about losing bottom end with the long tubes. I currently get a 1.63 60' will the long tubes without a tune hurt that? Thanks

MTN_Z

iTrader: (7)

Long tubes will still gain power, but you will get a little more out of a tune. As far as hurting your 60', what are you worried about. Bottom end at the track wouldn't be a concern with a Vig 3600.

brad8266

iTrader: (23)

I am so sick of this "low end loss" longtube theory. It is 100% bullshit!!!!! Someone please show me a dyno sheet before and after longtubes where the after sheet has lower power down low.
You probably dont "need" a tune. Cant hurt though.

Starz T/A 17

iTrader: (6)

yea, if your planning a cam soon wait until then but your car will run alot better if you get a tune

rickyracer25

iTrader: (11)

Yeah, what he said unless you just have a sh$t load of money to burn... and if that's case can i have some??? please

Bo White

iTrader: (59)

You will be at least 1 full point richer with headers so if your 13:1(with a good tune the last time at the dyno) then you will be back to the factory 11.7-12:1

omcar

iTrader: (10)

Thanks for the info..so what I've heard (read) is no need for tune but would be beneficial to lean out motor from 13:1 to 12:1.

sunsetta

iTrader: (3)

Much better with a tune.

davered00ss

iTrader: (4)

To get the most out of them, yes you need a tune.

98camaroLS1M6

iTrader: (35)

Definitely get a tune unless you want your car to run really rich.