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View Full Version : U.R. cat and downpipe

07outty
04-05-2009, 06:46 PM
i installed my Ultimate Racing cat and down-pipe today.

have not driven yet.......waitin' for the glue to dry.
RAcowboy
04-05-2009, 07:41 PM
dyno #s availible?
07outty
04-06-2009, 08:29 AM
i do not see me having my car dyno'ed any time soon.

i do my own work (except for electronics ) in my garage.

i do not think this mod would add much measureable H.P.

........just might change the way the turbo spools.

in driving to work this morning , the power delivery does seem smoother.

the exhaust sound ( in car ) changed slightly......
.......a very low pitch slight "hum" while cruising.
joeskrobacz
07-10-2009, 04:20 PM
Did you have to get a tune after adding the down pipe and hfc.
Ladogaboy
07-10-2009, 04:43 PM
Not really. You won't see maximum gains unless you do, though.
laflsyl10
07-14-2009, 08:09 AM
Not really. You won't see maximum gains unless you do, though.

Is the exhaust tone slightly louder or a lot louder. I'm looking for something that add a bit of power and not wake the whole neighbourhood.
thank
07outty
07-14-2009, 11:16 AM
with the down-pipe and high flow cat...

the exhaust sound is not really louder....just "different". ( lower pitch ? )

my only "engine mods" are...

the down-pipe and cat. ( both from ultimate racing )

a WORKS drop-in air filter . and i adjusted the waste-gate accuator.

the car definetly pulls better/smoother than stock.
ENEMIGO
07-14-2009, 11:26 PM
Adjusted the Westgate?? Can you explain please?
07outty
07-15-2009, 11:50 AM
Adjusted the Westgate?? Can you explain please?

waste gate

the actuator that contols when/how it opens is adjustable.

it is part of the turbo system.........
....... it controls the amount of the exhaust gases spinning the turbo.
ENEMIGO
07-15-2009, 09:03 PM
Yes I know that. I'm asking why you adjusted it. What results did you see. If you got good results maybe do a how to so the rest of us can benefit.
07outty
07-16-2009, 09:39 AM
as far as i know , most w.g. accuators are adjustable.

i like to experiment with things i can do on my own ( especially when it is 100% reversable).

when i "tightened" the accuator on my RA , i felt as if the spool up was smoother and stronger.

it may also be holding boost up higher in the rpm range as well.

the adjustment "looser or tighter" would vary from car to car as far as feeling an improvement.

the amount of tightening would deffinetly have an effect on how high the boost would build.

too tight could potentially cause over boost.