Nick L

I'm sure this has been asked a few times already, but most of the answers seem to relate to cars where warranty is less of a problem for the owner.........I've just had the PPP upgrade and have been well pleased the result. I had to have the PPP upgrade as it is a company car and I was not allowed to make any amends that would invalidate the warranty. It's 4 months old and with 12k on the clock.

I want to make some further mods if poss which will improve performance a little further.

I noticed some threads talking about different panel filters. Would this mess up the PPP fitted? Would I get any benefit if I did this? Which one(s) are worth a look?

Is there anything else I could do - preferably within the confines of maintaining the warranty - BTW, I do use Super Unleaded already and definitely notice a reduction in performance without it (at least until it has been running for 50 miles or so anyway)

Thanks

Nick

Neil Smalley

IMHO Driver training. The largest factor in car performance is the driver. Plus you can use it in whatever car you're driving. Then i'd go for brake upgrades, followed by suspension. Prodrive do all the above so warranty won't be affected.

GRIFF007

try and stick to Shell Optimax for max power

robsta

I've just ordered an Sti panel filter for my StiPPP as its an OEM part, the warrenty is not affected and should give better pick up.

Robsta

GRIFF007

surely that comes as standard in an STi?

Boyakasha

iTrader: (2)

Nope, STi comes with the usual paper filter you get in the WRX. There are two versions of the STi Filter, one which is paper and the other is Foam.

chris's scooby

Which is the best one to go for?

pbee

Its the STi grp N panel filter you want which i believe should be standard in the spec c to meet homogligation requirements for grp n cars.

its different to what is fitted in other standard sti's. it has wire mesh with sti printed on, I think this one is still paper as it requires replacing as often as the standard item.

there is a picture on scoobymania's website.

you may also want to look at the JR filter from scoobyworld, it has received excellent write ups and its the filter Peugeout changed to for the 307 wrc.

Its a cotton gauze and so is good for a longer period of time. It can be cleaned and used for longer but I would just uy a new one every 30k or something.

With either filter when you take the car to be serviced just put the original one back in much safer option as they will replace it with the paper one anyway unlesss you tell them not to.

p.s i hope your not expecting miracles from just a filter :-)