>
the header design thats sold on ebay for the 5sfe isn't the greatest. It abruptly goes from 4 to 1 in a matter of 6-8 inches. It needs to be a gradual design. So not very much hp with that header, but better than oem for sure.
on another note, take a look at this 1996 ITR bpipe setup. Better and smoother flowing than the 3sge beams motor:

vs
>>Heat shields removed
>>
This post has been edited by BonzaiCelica: Sep 12, 2013 - 11:19 PM
>wow so much information to absorb
i have a 5sfe 99 gt. im trying to determine whether or not the stock header is be better for cruising or fast takeoffs or is it a middle ground or does it just suck. i want to replace my first cat with a new one possibly hi flow but get rid of the second since the computer doesn't know its there anyway. if i do get an aftermarket header, do they all delete the first cat? im also trying to shed a little weight. im hoping that an aftermarket header will weigh significantly less than the stock cast iron one. any input on that? who has dyno charts to prove gains with their header?
i have a 5sfe 99 gt. im trying to determine whether or not the stock header is be better for cruising or fast takeoffs or is it a middle ground or does it just suck. i want to replace my first cat with a new one possibly hi flow but get rid of the second since the computer doesn't know its there anyway. if i do get an aftermarket header, do they all delete the first cat? im also trying to shed a little weight. im hoping that an aftermarket header will weigh significantly less than the stock cast iron one. any input on that? who has dyno charts to prove gains with their header?
the header design thats sold on ebay for the 5sfe isn't the greatest. It abruptly goes from 4 to 1 in a matter of 6-8 inches. It needs to be a gradual design. So not very much hp with that header, but better than oem for sure.
on another note, take a look at this 1996 ITR bpipe setup. Better and smoother flowing than the 3sge beams motor:

vs
>>Heat shields removed
>>
This post has been edited by BonzaiCelica: Sep 12, 2013 - 11:19 PM
Group buy to replicate Narrow E series transaxle partshttp://www.6gc.net/forums/index.php?showto...p;#entry1107514









