blue88gxl N/A

two quick questions
when you put a header on will it improve your mpg??
secondly is racing beat the only one that sells a header with space for the oxygen sensor??


thanx ahead of time

SoloIIdrift

if your 6 ports dont function anymore I dont think that'll improve your MPG....make sure they do

Liquid Anarchy

iTrader: (2)

If your 6th ports function ( 89+ engine ) will headers destroy/bring up your MPG?

defylogik

pacesetter has an oxygen bung.

mazdaspeed7

Hurt gas mileage, youre kidding right? Headers will improve your gas mileage by making your engine more efficient. Look at my mods in my sig, and I get 22-25 mpg mixed city/highway on 93 octane.

Liquid Anarchy

iTrader: (2)

I'm striving to be like you Mazdaspeed, with a few discrepensies. Engine rebuild + Streetport in the next month. CAI in the wheel well. RB Header/Collector ~> Pre-Silencer ~> Single Muffler. Electronic 6th ports + Pineapple Racing Sleeves. That and I'll keep my creature comforts ( A/C and P/S ) All the rest... I'm there

SureShot

Your MPG may go down only because you will be having more fun making more power at higher revs. With your setup the header will be somewhat louder also

Audiofight

SureShot has a very valid point.

More power at high rpms = staying at high rpms because its fun! = poor mpg

blue88gxl N/A

two more question
first how hard is it to get the old exhaust manifold off and put the header on?? I have access to a lift will that help me??

second what diameter does the header exit out of?? 2.5in or 2.25in??

thanx guys you all have been a great help

frazer

i have a mindtrain header. love it! more power, and as stated above, my mpg only went down because my right foot tends to go down more often.

mike

Roundabout

iTrader: (8)

BUNGHOLE!