Paul
05-10-05, 11:52 PM
Right who's done it then?
I read somewhere about it the other night, decided to give it a go this afternoon.
I had a K&N Panel Replacement filter already in my car, Standard SRi.
I drilled 15 evenly spaced 20mm holes 1x1.5" apart, on the underside of the airbox casing.
Before the noise wasn't noticeable and it felt like it died slightly towards higher revs esp. in 3rd, 4th and 5th. I never drove it with a standard filter as the K&N came with the car when i bought it.
Since drilling the airbox I am most impressed. The noise is a very deep growl low down, goes to a loud roar at high revs. Sounds ace in my opinion better than a cone filter.
It also seems to rev quicker slightly, and keeps pulling better at higher revs. Im not saying it added 10bhp or anything, I am just commenting on my personal findings.
When you actually take the airbox out, you can see really how restirctive it is, the air can only come in through a 3x2" slot in the front from a cold air feed in the grill. The panel filter is still encased in the box, too keep heat down, and hot air rises and the holes are in the underside of the box, so it wont allow any hot air near the filter unlike the cone filters.
By no way am i saying its made it quicker, but it certainly seems to pull harder throught the rev range.
So for any SRi/GTE/GSi owners, if you are after an air filter, I highly recommend a replacement performance panel filter, and drilling your airbox, cost ?40ish for filter, drilling free, cone filters for the cars are aroun ?60 upwards.
I know I'm going to get some sarcy comments like 'oh thanks for that info' but just thought I'd post for those of you who may be interested.
Paul
I read somewhere about it the other night, decided to give it a go this afternoon.
I had a K&N Panel Replacement filter already in my car, Standard SRi.
I drilled 15 evenly spaced 20mm holes 1x1.5" apart, on the underside of the airbox casing.
Before the noise wasn't noticeable and it felt like it died slightly towards higher revs esp. in 3rd, 4th and 5th. I never drove it with a standard filter as the K&N came with the car when i bought it.
Since drilling the airbox I am most impressed. The noise is a very deep growl low down, goes to a loud roar at high revs. Sounds ace in my opinion better than a cone filter.
It also seems to rev quicker slightly, and keeps pulling better at higher revs. Im not saying it added 10bhp or anything, I am just commenting on my personal findings.
When you actually take the airbox out, you can see really how restirctive it is, the air can only come in through a 3x2" slot in the front from a cold air feed in the grill. The panel filter is still encased in the box, too keep heat down, and hot air rises and the holes are in the underside of the box, so it wont allow any hot air near the filter unlike the cone filters.
By no way am i saying its made it quicker, but it certainly seems to pull harder throught the rev range.
So for any SRi/GTE/GSi owners, if you are after an air filter, I highly recommend a replacement performance panel filter, and drilling your airbox, cost ?40ish for filter, drilling free, cone filters for the cars are aroun ?60 upwards.
I know I'm going to get some sarcy comments like 'oh thanks for that info' but just thought I'd post for those of you who may be interested.
Paul