Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: Brett on September 04, 2005, 08:15:31 AM

Title: TII, Exhaust air injection
Post by: Brett on September 04, 2005, 08:15:31 AM
I\'m planning on fitting a straight through system to my TII in the next week or so, I want to retain air injection into the exhaust though.  Are there any problems with me simply welding a flange onto the mid pipe and making a new air pipe to fit?

 Thanks in advance :)
Title: TII, Exhaust air injection
Post by: antnicuk on September 04, 2005, 09:55:32 AM
why do want air injection?    emmissions?
Title: TII, Exhaust air injection
Post by: Brett on September 04, 2005, 12:32:15 PM
Yep, should save arsing about at MOT time :)
Title: TII, Exhaust air injection
Post by: Grizzly on September 04, 2005, 01:19:34 PM
? I\'ve never had a problem? well exept the time i had my OMP turned up too much (too much blue smoke).
Title: TII, Exhaust air injection
Post by: Brett on September 05, 2005, 08:32:59 AM
Not being funny, but I find it very hard to believe an Rx7 with not CAT or thermal reactor will pass without any problems.  
 On my Egi I had to turn the mixture right down and make an air bypass valve for the UIM to get it through!

 What are your readings in terms of ppm and % with the straight through system then?

 :confused:
Title: TII, Exhaust air injection
Post by: Grizzly on September 05, 2005, 06:11:03 PM
Well it passes every year. maybe its due to my EMS set up???

Then it may also be the Testers Interpretation?? Or maybe my MOT man is Rx7 Frendly. ;)
Title: TII, Exhaust air injection
Post by: FD3UK on September 06, 2005, 08:21:16 AM
MOT should not be a problem, cars registered before Jan 1st \'93 do not have to have a cat fitted  


Kev
Title: TII, Exhaust air injection
Post by: Brett on September 06, 2005, 08:21:58 AM
Well, after some thought I think I\'m going to fit the air injection into the bottom of the downpipe.  That way it saves arsing around when I run with/without the CAT in place.

 Any one have any thoughts or suggestions?