B5 S4 vs B5 A4

[Richard]

What is the speed difference between a B5 A4 and a B5 S4?

Thanks in advance,
Richard

[Justin]

I believe the S4 is a 3 turbo V-7 and the A4 is a naturally aspirated inline 8. Due to the A4 having 1 more cyl. the A4 will have more torque from a stop and the S4 will spool up and maybe pull (drivers race). But from a roll the S4 will slightly pull...

[Richard]

I'm amazed that you have a tri-turbo V-7! I wish I could afford such a thing, but currently I only have a Semi-Turbo on my V-18 Porsche conversion engine. Let's race from a roll of 150...