My RS under the knife..

[ad2330]

Getting a few things thrown on the car this weekend:

JHM full 2.75" exhaust (non-res; catless)
JHM LWFW/Clutch (stage 4)
JHM Intake Spacers
JHM Short throw/linkage
JHM 91 octane tune
Carbon Clean

Looking forward to re-introducing myself to my car come Sunday!

Will keep you posted.

[Noyjatat]

Nice I take it you are in the US then

[ad2330]

Correct.

[sync24]

Happy days! I really wanted a JHM zorst - but they are SO expensive to ship to the UK - be good to see the results.

[Rick_RS4]

looking forward to seeing the resullts from this,

[Spectre]

[sakimano]

Happy days! I really wanted a JHM zorst - but they are SO expensive to ship to the UK - be good to see the results.

Even if shipping is $1000 (it's not) the JHM 2.75" catback exhaust + Jhm 2.75" Downpipes with cats is still cheaper than a MTM catback exhaust alone.

$2750 USD (catless) is about £1750.

Here's a friend's car on the dyno this weekend. Jhm catless fullback and tune, 365 whp 311 wtq. Temperature was 27 Celsius.

A stage 3 b5 s4 with k04 turbos put down 350 whp and 400 WTQ right before him.

https://www.youtube.com/watch?v=uCsKy7s ... ata_player

[hlbeckley]

that is great WHP....wow
nearly 100 more than what a few standard Rs4s making here in Johannesburg

[sakimano]

that is great WHP....wow
nearly 100 more than what a few standard Rs4s making here in Johannesburg

That is pretty normal for jhm full catless plus jhm tune. I know of 3 other rs4s with that setup that made between 360 and 370 whp.

[ArthurPE]

Johannesburg is 5800 ft asl
that is almost a 22% power loss or 1.28 cf
so 270 ~ 345 corrected (for the same temp, humid and atm pressure, 77F, 0% rh, 29.235 "hg)

[sakimano]

Johannesburg is 5800 ft asl
that is almost a 22% power loss or 1.28 cf
so 270 ~ 345 corrected (for the same temp, humid and atm pressure, 77F, 0% rh, 29.235 "hg)

Good point!

The dyno run in question was done at about 200 feet of elevation and probably 2000 feet density altitude (guess) at midday on Saturday. Nearest dragstrip for a da calculator is Toronto Motorsports park 40 miles away.

[sync24]

Even if shipping is $1000 (it's not) the JHM 2.75" catback exhaust + Jhm 2.75" Downpipes with cats is still cheaper than a MTM catback exhaust alone.

$2750 USD (catless) is about £1750.

To clarify, a pair of 2.75" JHM downpipes with 200C sport cats [no funky vband connectors] and a twin 2.75" cat back system comes in at $3100 or roughly £1998 [They have a group buy on at the moment] - but delivery is around $400 and then you have UK import duty as well. Overall it works out around £2882 to the get the system to you in the UK and then you have fitting and RR time....

I am having a bespoke system made for a grand cheaper at the moment - expect results on Friday eve .....

[sar]

I am having a bespoke system made for a grand cheaper at the moment - expect results on Friday eve .....

obviously 2.75 with an x pipe?

[sync24]

I am having a bespoke system made for a grand cheaper at the moment - expect results on Friday eve .....

obviously 2.75 with an x pipe?

Close - but no cigar

[sar]

hmmm, don't be tempted to go bigger than 2.75.
x pipe is essential.