Exige S with Tubular backfiring issue

[woteva]

Tried searching but couldn't find anything.

Recently fitted a Tubular exhaust manifold, decat chamber and silencer to a 2006 Exige S.

It's backfiring badly now and we are getting pinged for noise at trackdays (even though it passes the static easily). Definitely the backfiring that is tripping the noise sensors.

Any suggestions on what can be done about this? Is there anyone out there able to fiddle with the stock ECU? Or any piggyback options worth looking at? I can't be the first to come across this problem, as I would imagine it's the same for everyone who fits a system with less backpressure than stock system.

Thanks

[woteva]

Just for further clarification, the backfiring is on gear changing, ie snap the throttle shut and bang. And yes, it's the standard Toyota 2ZZGE engine.

[woteva]

It's a 7inch, and yes it's popping on upshift.

Yes, aftermarket ECU will fix I guess, but I was thinking I suppose there must be other people who run this setup, and I'm surprised if aftermarket is my only option? Surely I can't be the only stock ECU/Toyota/2bular/Trackday guy around?

[woteva]

I was hoping it doesn't mean reverting to fitting the cat again, but maybe you are right. The version of manifold that jim made for me doesn't allow the fitment of the standard cat, so I'm a bit stuffed really.