ok, so I have fitted the Ninja II back box but on my hawkeye its so quiet, better than stock but still pretty quiet.

 

been to see a guy which makes longlife exhausts and he has offered me straight pipe with o2 sensor in from the downpipe to my backbox for £180

 

or turbo back for £280

 

But I am usure if either of these will give me CEL?

 

the plan is to get it mapped in the future but as I was unable to find out about timing belt I will be doing that and a full service which would of been spent on a remap, so want it as hassle free atm. 

 

 

Its hit and miss really if you will my mates not long put a nuspec on his and had no cel light at all yet I did mine straight away cel light popped up. But not a bad price :-)

hmmmmmmz that didnt help me at all :)

 

think il go for the downpipe back may be safer option and then decat that later with a remap. 

Way it goes sometimes I guess :D same with blow off valves. Some cars can have them others can't :( I always thought you would get a cel light on no matter what when doing it, until my mate did his 

hehe

 

I see the PPP pack has the 2nd cat removed tho it may be remapped to ignore I guess.

 

I also have a forge dump valve on its way to me so hopefully wont have problems with that either :)

I removed the up-pipe and centre section cats on my 2003 WRX and no CELS. As soon as I got a Sports cat downpipe I got a CEL within 50 miles, I could clear the emissions related code with a phone app but as soon as I drove it steady on the motorway the sports cat would get cold and throw the CEL again. 

 

I expect a full decat on a Newage will throw a CEL more often. An unmapped decat on an Hawk is pretty risky, especially if you are using 95 or 97 fuel. 

 

I'd like to know how a mapper deals with the 02 Sensor to stop the CEL's.

ok so did precat back, no CEL so all good sounds much better.

Also fitted the dump valve will have to take it for a test in a min