general question
 

done a few searches but no definitive answer....

i have an 03 wrx and just wondering ?.
if i get a blitz nur spec r exhaust do i need to get a remap ? only wondering as im sure its only cat back so dunno if it would affect any sensors etc ? thanks in advance for any feedback.
Davie.

Davie if its just cat back no it won't need a remap mate. If its decatted that's when you'll need a remap to get the most out the mod. Hope this helps

Martin

sorry to kinda double check but are you sure martin ? as i said in my question many different opinions on this ... IS the blitz exhaust only cat back ? and are you sure no remap is needed ? thanks again btw .. appreciate it..

Its ok mate, I'm pretty sure as you'll only be replacing the mid section and back box so assuming all cats will still be in place there should be no need to map. I imagine when you change the downpipe removing the cats then it will need mapping sure someone will be along to correct me if I'm wrong

Martin

to get the most from the system then yes it will need mapping,as for safety i would say no it wouldnt need a map,i have just changed my miltek system to a non-resonated system cat back with a japspeed backbox and i havent had it remapped-runs fine no problems/warning lights etc on my 04 wrx

thanks very much guys appreciate it.. curiosity gets me askin though... what would the benefits be of a remap though if i only had cat back ?

Not a lot I think mate, probably just smooth things out. If your considering a remap i would collect all the bits needed and bolt on before the map session.

Full decat from turbo back
Decat up pipe
Good panel filter
Uprated fuel pump
3 port boost solenoid

Should see some decent gains also will be the most cost effective way too

Martin

Blitz Nur spec are bloody loud! I have just fitted one to mine! They aren't cat back as they remove the centre cat. A real Nur spec is a 3" then mates to the 2"5 downpipe
Cone gasket flange

so defo not needing a remap and the 3" blitz system would just bolt straight on to my standard fitment ?

Just had mine on the rolling road with a full de cat (not mapped) and its running spot on so id say its fine, as for the benefits of de catting i will see these when its mapped this week after a few cheeky bolt ons :norty:

Blitz is a 3" which tapers down to a 2.5" at the downpipe mate so provinding you don't have a a 3" down pipe where it meets it'll go straight on. I put mine on and drove it for a month without a tweak. Hope this helps

Martin

The 2.5" and 3" pipes normaly have the same size flange so they will bolt straight together :thumb:

Had a problem once where my H&S downpipe which tapers down to a 2.5" wouldt mate with a japspeed 3" centre section :cuckoo:

I'd just double check they fit and if they do jobs a gooden :thumb:

Martin

Thanks guys..am defo wanting one now so if you here of any for sale at a good price could yous keep me in mind and let me know. Thanks again.
Davie.