Janspeed 4-2-1 or Raceland 4-2-1

19th March 2011, 01:13

Which one would be better for a vts? Do i need to move anything or?? and if i dont decat will i feel any gains?

Cheers

19th March 2011, 01:19

Quote:

Originally Posted by Nikon

Which one would be better for a vts? Do i need to move anything or?? and if i dont decat will i feel any gains?

Cheers

Hi,

Personally when it comes to a vts the 4-1 manifold is slightly better as it gives a bigger top end and you don't need to relocate anything. It also depends wether or not your getting a full system? Personally if your going to buy a 421 or 41 manifold you might aswell decat as the catalyst is there to restrict the exhaust gases, and your installing a manifold which will increase them so yes i would decat it. Decent air filter/manifold/system on a vts will see you about +15bhp (Rough figures as all models are different based on how they've been treated) but will feel alot more responsive and a little more torque. To sum up - You will beat a standard vts

19th March 2011, 01:22

Quote:

Originally Posted by ClumpyVtR

Hi,

Personally when it comes to a vts the 4-1 manifold is slightly better as it gives a bigger top end and you don't need to relocate anything. It also depends wether or not your getting a full system? Personally if your going to buy a 421 or 41 manifold you might aswell decat as the catalyst is there to restrict the exhaust gases, and your installing a manifold which will increase them so yes i would decat it. Decent air filter/manifold/system on a vts will see you about +15bhp (Rough figures as all models are different based on how they've been treated) but will feel alot more responsive and a little more torque. To sum up - You will beat a standard vts

well i have just got a new back box and center section just wondering if it will fit because it will be all different makes lol i know the back box and center section fit just wondering about the decat and mani if it makes any sense lol

19th March 2011, 01:36

Should all piece together mate although different brands the exhaust will have to follow the same route along the bottom of the car bud

19th March 2011, 04:29

Quote:

Originally Posted by ClumpyVtR

Hi,

Personally when it comes to a vts the 4-1 manifold is slightly better as it gives a bigger top end and you don't need to relocate anything. It also depends wether or not your getting a full system? Personally if your going to buy a 421 or 41 manifold you might aswell decat as the catalyst is there to restrict the exhaust gases, and your installing a manifold which will increase them so yes i would decat it. Decent air filter/manifold/system on a vts will see you about +15bhp (Rough figures as all models are different based on how they've been treated) but will feel alot more responsive and a little more torque. To sum up - You will beat a standard vts

A 4-1 doesn't always mean you'l see an overall increase in power over a 4-2-1. I know of people who seen better gains throughout the rev range with a 4-2-1 mani over a 4-1!

The cat isn't there to restrict, ristriction is a bi product of the cat, if you use a sports cat, it's almost no restriction and will make no difference.

19th March 2011, 06:39

I'd go with the Raceland 4-2-1 personally

19th March 2011, 08:19

The Janspeed is a better fit and is better made, but it will rust. (Although it will probably outlive your interest in the car).

The raceland is stainless steel but can be an awkward fit.

Unless youre going race cams and throttle bodies, then a 4-2-1 manifold will give you a better gain over a 4-1

19th March 2011, 09:57

I dont think any 4-1 for the saxo vts has been proven to give more top end on a normally aspirated tune, with the best 4-2-1's outperforming them by a reasonable margin.

19th March 2011, 13:06

i got a raceland on my vtr it is very nice lolll!