Hi All,
Yesterday I took a drive down to Celtic in Cornwall, I have used these guys for years and had many vehicles mapped etc there.
Having had catless downpipes fitted to my 35i (and getting no warning lights for the lambda sensors!!) I booked a visit to remove the rear lambdas from the software and get a fresh dyno run in.
Whilst waiting for the work to be done and watching it all via CCTV, I chatted with the guys about a couple of topics.
1. Cone air filters, good idea?.
I was considering these but the guys said absolutely not unless they they come with a cowl to draw cold air from the outside. Reason being is that the hot air under the bonnet is less dense so you get a loss of power. I was advised to simply change the standard filter for a performance one that drops right in which would give me 7-8 BHP (is it worth it?). If an oiled filter is used care must be taken not to over oil or the MAF sensor gets covered and your fuel/air settings go to pot.
2. Why do manual 35i get better BHP figures?.
The DCT box reduces engine power to limit torque through the box as it approaches the change point!
All good info from them that really know so I thought I would share with you all.
Yesterday I took a drive down to Celtic in Cornwall, I have used these guys for years and had many vehicles mapped etc there.
Having had catless downpipes fitted to my 35i (and getting no warning lights for the lambda sensors!!) I booked a visit to remove the rear lambdas from the software and get a fresh dyno run in.
Whilst waiting for the work to be done and watching it all via CCTV, I chatted with the guys about a couple of topics.
1. Cone air filters, good idea?.
I was considering these but the guys said absolutely not unless they they come with a cowl to draw cold air from the outside. Reason being is that the hot air under the bonnet is less dense so you get a loss of power. I was advised to simply change the standard filter for a performance one that drops right in which would give me 7-8 BHP (is it worth it?). If an oiled filter is used care must be taken not to over oil or the MAF sensor gets covered and your fuel/air settings go to pot.
2. Why do manual 35i get better BHP figures?.
The DCT box reduces engine power to limit torque through the box as it approaches the change point!
All good info from them that really know so I thought I would share with you all.