A few tuning questions....

[myfirsts4]

Hi guys, new to the S4 just starting to carry out a few sensible mods on my '98 S4 (100k miles). Was thinking:

1. Panel air filter but which one? Think the two main runners are pipercross or K&N, anyone have any good/bad reports or any other suggestions?

2. Gut pre-cats, hoping to do this at the same time as.. (anyone around the Gloucestershire area want to do this for ££?)

3. MRC re-map, is it worth the extra £100 for the custom re-map?

4. Want to try and get a stainless exhaust as well, want one that is not really any louder than stock if poss and one that doesn't cost a fortune! Which should I look at?

With all of this what kind of power and torque can i expect and what will that do to my 0-60 times?

Sorry if this has been covered to death but couldnt find as much info as I would have liked.

PS killer site. Looking forward to the 300bhp+ club, will arm wrestle the wife for the ££!

[S4TAN]

1. Panel air filter but which one? Think the two main runners are pipercross or K&N, anyone have any good/bad reports or any other suggestions?

ITG foam panel filter

2. Gut pre-cats, hoping to do this at the same time as.. (anyone around the Gloucestershire area want to do this for ££?)

Do it.

3. MRC re-map, is it worth the extra £100 for the custom re-map?

Yes - definitely.

4. Want to try and get a stainless exhaust as well, want one that is not really any louder than stock if poss and one that doesn't cost a fortune! Which should I look at?

Milltek 3" single catback

[rolskii]

Welcome dude ..... glad you decided to enhance yr grin and empty yr wallet ....

PS killer site. Looking forward to the 300bhp+ club, will arm wrestle the wife for the ££!

300...... that wont last long .....

Get a health check first, well same time the p/cats are done and the remap ......

[Blue_Thunder]

3. MRC re-map, is it worth the extra £100 for the custom re-map?

If you are willing to pay the extra £££'s for the new exhaust, then £100 is nothing.

Personally, I got the generic remap from standard and I was more than happy.

Then again, as Rolskii says, it won't last long!

[fletchie55]

get the filter, exhaust, gutted pre-cats first then the custom re-map. should see around 320 BHP not sure about torque, 0-60 will obviousley be reduced, not sure what to though possibly remove about .5s from the standard time.

[Blue_Thunder]

Be aware that certain panel filters can kill your MAF if over oiled. Also there are plenty of people with high power figures still running the stock filters.

[GrahamS4]

What do you want from the car?

Most people here are still using the stock paper filter (fair enough to those that don't, but I think we agree the air filter is no great restriction at least not in the first few stages of tune).

I would say the £100 difference for the custom map is a no brainer, just do it.

Re. exhaust, if you don't want noise (like me) leave it alone. Dependind on the car you are still looking at anything from 310+ BHP, mine is a good 320BHP.

Otherwise I would say gut the cats, expecially as you have not had the map yet, definatelly custom map if you gutt the cats and a 3" single milltek catback if you want it to sound better. I doubt much of a gain (comparing the MRC FATS database) but does set you up better for bigger things later on.