Activa Exhaust

activa · Unread post by **activa** » 30 Jun 2005, 19:16

I need an expert's advice!
I have tuned my Activa (2.0 Turbo) with a Superchip and so far it goes great. I think of replacing the factory's exhaust pipe (after the first part leaving the engine) and the catalyst with a larger diameter pipe and an Americat catalyst.
Do you think it would create any problems or engine faults?
Any suggestions, comments, ideas etc. would be appreciated...
Thanks in advance.
Dimitris
Greece

stephen burch · Unread post by **stephen burch** » 01 Jul 2005, 12:07

Has the chip boosted the turbo output? If not play around with the activator to get a little more boost. It will probably go to about 9 psi before the actuator is overcome.

patneenan · Unread post by **patneenan** » 01 Jul 2005, 12:38

How do you play around with the activator?
Is that the wastegate arm rod that you screw in more?

macaroni · Unread post by **macaroni** » 01 Jul 2005, 13:03

Easier than that is to fit a Manual boost Controller (MBC). These are very cheap and easy to fit and save any messing about about with the turbo parts. I have one on my Activa and have increased boost up to about 14psi (0.95bar) and the difference is astonishing.

activa · Unread post by **activa** » 01 Jul 2005, 14:09

The boost of the turbo is increased electronically (by the car's CPU, and eventually the new chip) and it goes up to 1 bar at maximum throttle.
So, the turbo output is increased.
The thing is, do i need to put on a larger exhaust or not? (hand-made because original is hard to find)
Dimitris

macaroni · Unread post by **macaroni** » 01 Jul 2005, 18:36

Ok fair enough. I am after a custom de-cat pipe for my car as it should increase mid-range torque quite considerably.
If you are keeping a cat, there should be no problems.

patneenan · Unread post by **patneenan** » 01 Jul 2005, 18:52

Macaroni,
Could you post details here about how to get hold of the MBC.
Is this fitted in conjunction with the chip or as a separate modification?
When you say the difference is astonishing .
How astonishing?

ActivaV6uk · Unread post by **ActivaV6uk** » 01 Jul 2005, 19:14

go to www.activanet.co.uk the MBC is coverd on there, if you own a Activa or CT engine check activanet.co.uk first it was set up so that activa info was not lost on this forum and a few others...
Andy

patneenan · Unread post by **patneenan** » 01 Jul 2005, 22:20

Andy, Can't open half the links there, in which section is it?
Thanks Pat