TII, Exhaust air injection

Brett · 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

antnicuk · September 04, 2005, 09:55:32 AM

why do want air injection? emmissions?

Brett · September 04, 2005, 12:32:15 PM

Yep, should save arsing about at MOT time

Grizzly · 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).

Brett · 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:

Grizzly · 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.

FD3UK · 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

Brett · 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?