4-2-1 manifold

25th March 2010, 12:53

do these make much differents in power and sound to exhausts

i have a 1.4 westcoast

25th March 2010, 13:01

Sound = Yes
Power = Marginally

If you have a cat-back exhaust system already, then a 4-2-1 should give you a little gain in power. Good ones to go for are - Supersprint, Piper, GMC

25th March 2010, 13:02

Yes it will make a difference in power.

db_sax had a bloody quick westy cant remeber if he had a 4-2-1 but he had a vts box and enclosed induction kit. That thrashed vtr's.

25th March 2010, 13:06

i have beaten vtrs already and that was just with a induction kit also ecu was unlocked and made to rev higher i was told but now fitted a enclosed one and thinking of getting a manifold

25th March 2010, 13:14

Quote:

Originally Posted by badboyracergt5

i have beaten vtrs already and that was just with a induction kit also ecu was unlocked and made to rev higher i was told but now fitted a enclosed one and thinking of getting a manifold

What exhaust system have you got mate?

(By the way, the fact that your car can rev higher doesn't help, since the powerband doesn't go into the higher revs on a Westie so basically it would be better to change gear at 5k or so, going up into 6,7,8k RPM is a worse point to change gear with standard cams, as there is hardly any power or torque up there.

25th March 2010, 13:19

i was running standard i took the cat out too iv got a turbo revs 1 but not fitted yet

25th March 2010, 13:23

Quote:

Originally Posted by badboyracergt5

i was running standard i took the cat out too iv got a turbo revs 1 but not fitted yet

Sell it.

Get a Magnex or a Supersprint, decat, and a Supersprint or Piper 4-2-1

Should give you a really good gain, sound absolutely amazing and even spit the occasional flame and backfire / pop.

25th March 2010, 13:27

thanks for the help