All Things Mk5 > Performance Modifications
Pre Cat removal
zerolag:
To be realistic any improvements are going to be slight. That said, I've found:
NOISE
I've noticed a deeper exhaust note, but not overly so.
I can hear the turbo more than before.
POWER/TORQUE
I think there is a slight improvement in the top end; the revs climb more freely than before, and I feel the turbo spins up a bit quicker; perhaps a little more torque in there also.
FUEL CONSUMPTION
Slightly worse when WOT'ing it... this leads me to believe that it's producing slightly more power.
Slightly better when cruising.
Overall, don't expect miracles, improvements are slight.
Cold starts: Fine (-3*C yesterday)
Downsides: Can't think of any
GrayMK5GTI:
Completely agree with the above ^^
Mine made about 5bhp extra on the dyno :happy2:
the bruce:
--- Quote from: Timvgti on January 14, 2013, 04:15:14 pm ---So you've never seen the engine management light? Also no with these winter-temps?
So no downsides for this mod?
Have you also noticed a better fuel consumption?
What's the most noticeable? -> The quicker/better gas response? The sound? The fuel consumption? The bhp?
--- End quote ---
Never experienced any warning light and all my friends also didn't. :wink:
On the orther hand I think pre cat removal is extremely overrated. I didn't feel any advantages.
Noticable engine response? No, don't get fooled by self-fulfilling believe. More power? Not what
you can ''feel' at all.
Yes, sound changes. It sounds more 'rough'. Personally it sounds louder, but less attractive, at
least with a stock pipe, not what I call a beautiful sound.
What's most noticable: When cold the car stinks. When I start in the morning and leave the car
to close my garage door it's stinking like an old car.
No question, on a new car I never would do this mod again. :fighting:
zerolag:
--- Quote from: the bruce on January 14, 2013, 04:46:17 pm ---
--- Quote from: Timvgti on January 14, 2013, 04:15:14 pm ---So you've never seen the engine management light? Also no with these winter-temps?
So no downsides for this mod?
Have you also noticed a better fuel consumption?
What's the most noticeable? -> The quicker/better gas response? The sound? The fuel consumption? The bhp?
--- End quote ---
Never experienced any warning light and all my friends also didn't. :wink:
On the orther hand I think pre cat removal is extremely overrated. I didn't feel any advantages.
Noticable engine response? No, don't get fooled by self-fulfilling believe. More power? Not what
you can ''feel' at all.
Yes, sound changes. It sounds more 'rough'. Personally it sounds louder, but less attractive, at
least with a stock pipe, not what I call a beautiful sound.
What's most noticable: When cold the car stinks. When I start in the morning and leave the car
to close my garage door it's stinking like an old car.
No question, on a new car I never would do this mod again. :fighting:
--- End quote ---
Out of interest, is your car mapped?
Timvgti:
--- Quote from: the bruce on January 14, 2013, 04:46:17 pm ---
--- Quote from: Timvgti on January 14, 2013, 04:15:14 pm ---So you've never seen the engine management light? Also no with these winter-temps?
So no downsides for this mod?
Have you also noticed a better fuel consumption?
What's the most noticeable? -> The quicker/better gas response? The sound? The fuel consumption? The bhp?
--- End quote ---
Never experienced any warning light and all my friends also didn't. :wink:
On the orther hand I think pre cat removal is extremely overrated. I didn't feel any advantages.
Noticable engine response? No, don't get fooled by self-fulfilling believe. More power? Not what
you can ''feel' at all.
Yes, sound changes. It sounds more 'rough'. Personally it sounds louder, but less attractive, at
least with a stock pipe, not what I call a beautiful sound.
What's most noticable: When cold the car stinks. When I start in the morning and leave the car
to close my garage door it's stinking like an old car.
No question, on a new car I never would do this mod again. :fighting:
--- End quote ---
Wow? That's something totally different compared to other reviews?! Others are 100% positive. Dyno's give around 5bhp extra, etc etc...
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