View Full Version : Need Help Fast
Samurai446
24-03-05, 10:06
Hey guys and gals. Ive got my full decat pipe and restrictor ring for my J-Spec TT Manual. I wanna get it fitted today, but i need to know whether i NEED a boost controller? Will the restrictor ring stop it overboosting and damaging the engine, or do i need a boost controller as well? Cheers
Boost controllers only raise boost - you dont need one :)
Get the decat fitted with the restrictor ring and see what boost you get - you want 1 to 1.2 bar (I assume you have a gauge).
Cars vary and the ring may need to be filed out to raise the boost - remember you will make more boost in the colder weather, so you might want to take this into account.
Enjoy :D
Samurai446
24-03-05, 15:22
Cheers matey. Just had it done along with a blitz supersound blow off valve. Valve sounds good, sounds better when bonnets open. But having problems with decat. I reckon it sounds too loud and i'm suffering backfiring problems. Reckon i'm just gonna get it taken off
Backfiring is normal and good :D So is loud :D
Backfiring is just unburnt fuel in the exhaust getting hot. (as I understand)
You could get a pipe to replace just one cat and put the other back if its too loud I guess. Most people seem to like the noise though :)
Samurai446
24-03-05, 20:31
the noise was ok, i didnt think the backfiring was good though. Cheers for clearing it up though.
Chris Wilson
24-03-05, 20:42
Backfiring is NOT normal, nor good!!!!
I assume he meant popping in the exhaust. Seems to be pretty common ?
Well a quick search revealed some supra owners talking about it here:
http://www.mkivsupra.net/vbb/showthread.php?t=17274
They seemed quite happy, but maybe ignorance is bliss.
Heres Chris's thoughts in another thread.
http://www.mkivsupra.net/vbb/showthread.php?t=20978
Do a search for 'popping' for more.
Looks like fitting a colder grade plug is in order.
Sorry for confusion. :taped: :rtfm:
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