4-2-1 manifold VTS

9th February 2010, 22:35

alright guys, im looking into getting a 4-2-1 while i got my VTS in peices. what sort of gain am i looking at getting (people with RR proof would be good) and which manifold is better for a VTS 4-1 or 4-2-1?

thanks guys

9th February 2010, 22:37

4-2-1 on most cars unless you have lairy cams and other mods etc that take the main power high in the rev range, if that is the case them 4-1. Upto you really though, but 4-2-1 is the most popular.

Supersprint from Kam, don't know exact gains unfortunatly. I would expect about 5bhp ish, maybe a lil more but all engines are different so it's hard to tell, it could make one figure on one car and a completely different one on another.

9th February 2010, 22:41

it doesnt really matter on a road car that much. The ideal is a 4-2-1 but the 4-1 manifolds like pipers see good gains also.

9th February 2010, 22:42

thanks for the input. just debaiting weather or not its worth chucking one on or not while its in bits...

9th February 2010, 22:45

One gain you will get for 101% is a gain of weight, thats for sure!

Some sound increase as well, and I am not sure myself what to think, some other people here think the same the rev kick about 4-5k isn't felt that strong, maybe cause its pulling just better before these 4-5k s. Down about 1-2k it feels like the engine got more torque, but maybe it depends on my race cat instead of the original 400 cspi ceramic thing.

I own myself a Raceland 4-2-1

Robert

9th February 2010, 22:56

Quote:

Originally Posted by Oxas16V

One gain you will get for 101% is a gain of weight, thats for sure!

Some sound increase as well, and I am not sure myself what to think, some other people here think the same the rev kick about 4-5k isn't felt that strong, maybe cause its pulling just better before these 4-5k s. Down about 1-2k it feels like the engine got more torque, but maybe it depends on my race cat instead of the original 400 cspi ceramic thing.

I own myself a Raceland 4-2-1

Robert

No he wont. The standard manifold is cast iron as weighs a tonne, where as a good aftermarket 4-2-1 will be a lot lighter.

9th February 2010, 23:00

Yeah hehe sorry my english isn't that great, you are right

I meant a gain of weight loss or power/weight ratio

10th February 2010, 00:43

As said prev may not make much diff but the main thing I realised is the VTS revs a lot easier.

I'd prob avoid the Raceland as it seems to be unable to keep the heat in, like so

they have a rep for snapping when cooling down.

I have the SuperSprint 421, its expensive but ive never seen it look like that, well worth in.

10th February 2010, 08:53

^ Woah, is that glowing red hot?

Or have you painted it?

10th February 2010, 08:59

Quote:

Originally Posted by Oxas16V

Yeah hehe sorry my english isn't that great, you are right

I meant a gain of weight loss or power/weight ratio

no worries mate, your english is still much better than my german

Quote:

Originally Posted by Saxo_vtr

^ Woah, is that glowing red hot?

Or have you painted it?

glowing, hence the "unable to keep the heat in part"

10th February 2010, 09:22

whats the best 4-2-1 you could get am planning on spending 1500 on mine doing the basics..cam,4-2-1 remap

10th February 2010, 11:44

Yea it's glowing.

They all do the same job, it just avoid the raceland and tuning leader shite.

10th February 2010, 12:19

Supersprint 4-2-1 are excellent.

10th February 2010, 12:58

this might be a stupid question but would it be ok to keep the original cat system cos i dont plan on decatting it just leave that standard or would it be best to get a full system?

10th February 2010, 12:59

Yeah i read that but have never seen a manifold glow that much / or that colour lol

10th February 2010, 16:33

It's a mates old vts, it had a hard life...

10th February 2010, 16:49

Quote:

Originally Posted by mtpagey

no worries mate, your english is still much better than my german

Thanks for the flowers

10th February 2010, 17:00

janspeed 4-2-1 on mine and that's lovely.. sounds mint too even when i had the standard backbox on it.

thats a VTR though, couldnt comment on a VTS

if you say you are going cams with your £1500 get a 4-1 because it will benefit the gains of having the rev-band shifted better than a 4-2-1

10th February 2010, 17:07

standard cat will restrict it a bit try and get a sports cat if your not going to de-cat

10th February 2010, 17:59

Quote:

Originally Posted by Lew_C

janspeed 4-2-1 on mine and that's lovely.. sounds mint too even when i had the standard backbox on it.

thats a VTR though, couldnt comment on a VTS

if you say you are going cams with your £1500 get a 4-1 because it will benefit the gains of having the rev-band shifted better than a 4-2-1

ok i was thinking janspeed myself im getting newman cams for it