MTM vs ABT vs APR vs AMD vs Superchips

[Andiroo]

Here you can see the benefits and drawbacks of each RS4 Tuner over the standard.

I believe John's peaks at 1.7bar boost then returns to 1.4bar max, mine and Phil's peak at 1.4bar max, the standard max boost is 1.0bar I believe.

Andiroo

[Andiroo]

Bugger, still dont seem to be able to link directly to the image in the gallery [img]images/graemlins/confused.gif[/img]

Andiroo

[PhilT]

What, like that [img]images/graemlins/wink.gif[/img]

BTW use the 'Instant UBB Code' just under where you type the message.

[Andiroo]

Thanks mate [img]images/graemlins/laugh.gif[/img]

Andiroo

[Reno]

It gives the impression that the stock-RS4 has few Torque [img]images/graemlins/grin.gif[/img]
which one is actually fastest?
Ps. I though the 440 Nm of the stock RS4 was/were constantly available between 2500 Rpm and the beginning of the Max.
power [img]images/graemlins/confused.gif[/img]

Greetz

[Bushy]

Andy

can i mail you a scan of my torque curve to put on this graph

or shall we wait for the RR day

i have an AmD remap but with a full Milltek so it should be closer to JR's, although he has an enormous peak torque

[johneroberts]

although he has an enormous peak torque

Oh my secrets out, hey everyone ive got a big un [img]images/graemlins/tongue.gif[/img]
Peak Curve that is
Cheers
jr

[Andiroo]

Is that tied in with your big potatoes John? [img]images/graemlins/tongue.gif[/img]

Would be my pleasure Bushy, I will update the plot as soon as you get it to me - anyone else want to be included?

Reno, the standard RS4 peaks at 440nM but unfortunately doesnt hold it for long [img]images/graemlins/frown.gif[/img] about 415nM across the rev range seems to be it's strong point - nice and flat, good for progressive and constant accleration up tp 7000rpm.

Andiroo

[Reno]

Thanks Andi, i must have got it wrong.
Just have a little (big [img]images/graemlins/grin.gif[/img]) question ;What's the difference (concerning the feeling, not technical) with a Stock RS4, don't you get more an on/off working? bellow 2500 Rpm there's nobody home and above it's a real explosion? I'm actually interested how it feels to drive a 450hp RS4, is it that much faster than stock?
thanks in advance,
greetz

[Andiroo]

Hey Reno,

Stock RS4 feels fast in a progressive sort of way. No real lag to mention, and constant acceleration thru all gears thru the whole reve range 3000rpm to 7000rpm.

Modified, be it MTM, AmD or Sportec (MTM and AmD the only real RS4 tuners in the UK at the moment) the feeling with 450 to 475bhp is somewhat different for me.

Firstly it does feel to me like I run out of gears a lot quicker, reaching 60mph (100kph) in supposedly 4.1 seconds. I haven't tried it as I like my gearbox [img]images/graemlins/grin.gif[/img] but thats what the road tests on RS460 indicate (and I've got 475bhp [img]images/graemlins/tongue.gif[/img]).

The acceleration does feel less progressive and more violent (see the torque curves), especially in 2nd gear, but it is still power you can reliably use (or not) in every day traffic.

All in all I like the Sportec torque curve for me, it gives me all the extra power throughout all the rev range, although for trackdays (especially shorter circuits) I would prefer the MTM (hello John [img]images/graemlins/wink.gif[/img]) as it give a hell of a lot of boost and torque low down so you can really power out of the slow corners.

The compromise to me is an MTM initial peak torque, carried flat to 6800rpm, in the shape of the standard RS4 curve - best of everything, and that's what I'm striving for. Wish me luck [img]images/graemlins/wink.gif[/img]

Andiroo

[Reno]

Great [img]images/graemlins/laugh.gif[/img] Thanks Andi!

[dog]

I would love to get my Wetteraurer figures onto that diagram too. What do you need?

[Andiroo]

Bushy, dog, Tweaky, just email your torque plots (preferably in nM) and I'll make up a new graph - should be interesting as a tuned S4 has a lot of excellant low down torque [img]images/graemlins/tongue.gif[/img]

Andiroo

[Bushy]

my plots are in the gallery