mtm S2 v B7 RS4

[DarrenM]

b7 rs4. 2 of them. give me a turbo motor any day.

Customer of ours is running an mtm Supercharger conversion on his b7 RS4, lets just say, theres, aheam, a few "issues" with trying to close the carbon bonnet now!

[GazzaG60]

whats that. some sort of reboxed eaton? twin screw?

a mate did a procharger on an impreza sport. worked well and fitted well.

do you think it will be as good as say an M3 SC Darren?

[add]

http://www.youtube.com/watch?v=FBkX8GS5FoY

looks like fun

[DarrenM]

On paper Gazza i should image they'd both come out about the same, to drive though,I have no idea.

Got another customer with an e46 M3 thats in final stages of installing a VF Stage 2 SC conversion,when complete I reckon it'll be the sweetest e46 M3 in the UK, in Laguna Seca blue as well which i love..

[EspenW]

From 50mph till ### mph in 4th in the s2 he was trailing even after a run up to me ,may be its the 150lb/ft of tourqe hes missing , who knows

Don't know if the RS4 was stuck in 4th gear too, but if it were, my data sheet gives the following numbers (note kilometers/hour):
100-140: 5,0s
100-160: 7,6s
100-180: 10.5s
100-200: 13,9s

If allowed to use the gears, it will run 100-200 in 12,2s.
This was a fairly lightweight one (1728kg) tested by Sport Auto. I have seen slower data for others.

Displacement is a poor replacement for missing manifold pressure.

[T2Andy]

So with those numbers was i lucky to kept ahead or the RS 4 isnt as quick as you would think ,btw iwas the 3rd car in a row 1 being a mrc mapped s2 gave expected figure ,2 was a bone stock RS2 which did 310 bhp and 440nm so the RR was pretty consitant.

[Lloyd]

B7 RS4's are not especially fast. There was one at Bedford last year during a track day. Each car had two up and we had the entire back straight to nail it. The RS4 was no faster than the RS2 until we got to 110 mph and it began to go past the RS2.

More BHP and lower Cd won the day.

[EspenW]

B7 RS4's are not especially fast. There was one at Bedford last year during a track day. Each car had two up and we had the entire back straight to nail it. The RS4 was no faster than the RS2 until we got to 110 mph and it began to go past the RS2.

More BHP and lower Cd won the day.

Makes good sense. Compared to the "333" hp B8 S4, the S4 is slightly quicker from 100-140kmh, they are dead even from 140-160, and then the RS4 is 1,7s quicker from 160 to 200km/h.