Toyota MR2 Message Board - View Single Post - 4A-GE MK1 Engine mr2 catalytic coverter

jus7o · 08-10-2008, 10:13 PM

Levin: Ok but first let me start by saying youre _F_ucking awesome ive read some of your helpful threads and posts - ur the man!

yes i have a TRD header and N/A HKS muffler. I've mesured the outlet flange of the TRD header and I read 2.25" and the HKS muffler has a inlet of 2". I didnt know the supercharged version had 2.25" piping if i did then this the would have been ALOT easier.

so if i decide to have you make me the custom cat what size cat would you use? and how will you do it? Would you use a 2.25" cat and neck down the outlet to 2"??

would there be any difference in overall transition/flow from 2.25" to 2" between chosing the cat option or muffler option?

ill get some pics up for you tomorrow.

thanks for your help.

08-10-2008, 10:13 PM	#9 (permalink)
jus7o D I Y Join Date: May 2007 Location: Houston Posts: 143 Thanks: 16 Thanked 1 Time in 1 Post iTrader Rating: (0/0% )	Levin: Ok but first let me start by saying youre _F_ucking awesome ive read some of your helpful threads and posts - ur the man! yes i have a TRD header and N/A HKS muffler. I've mesured the outlet flange of the TRD header and I read 2.25" and the HKS muffler has a inlet of 2". I didnt know the supercharged version had 2.25" piping if i did then this the would have been ALOT easier. so if i decide to have you make me the custom cat what size cat would you use? and how will you do it? Would you use a 2.25" cat and neck down the outlet to 2"?? would there be any difference in overall transition/flow from 2.25" to 2" between chosing the cat option or muffler option? ill get some pics up for you tomorrow. thanks for your help.