To VAG-Com users, FATS times database for the Euro S4s

Post by **JonnyX** » Mon Apr 24, 2006 6:12 pm

MAF looks very good and timing isn't too bad in the mid range.

Post by **DavidT** » Mon Apr 24, 2006 6:13 pm

MarkB wrote:I would say my MAF readings look good but timing low, so will probably do a log to see if the timing retards and the performance/bhp looks low. I think the intercoolers might have been a little hot as I'd just come out of a 30 zone...

What are the mods on your car Mark ?

Post by **MarkB** » Mon Apr 24, 2006 6:35 pm

Just AMD remap and Miltek cat back. Oh and Forge BPV's, not that they will make any difference for this test...

Post by **MarkB** » Mon Apr 24, 2006 6:37 pm

JonnyX wrote:MAF looks very good and timing isn't too bad in the mid range.

Mid range does seem the strongest on the car...

Post by **MarkB** » Mon Apr 24, 2006 6:56 pm

DavidT wrote:
MarkB wrote:I would say my MAF readings look good but timing low, so will probably do a log to see if the timing retards and the performance/bhp looks low. I think the intercoolers might have been a little hot as I'd just come out of a 30 zone...
What are the mods on your car Mark ?

Could a high MAF reading be an air leak? Turbo's dragging air in but being lost before it's burnt...

Post by **DavidT** » Mon Apr 24, 2006 7:01 pm

Could be, just try a run later on in clear air.

Post by **Paulm** » Mon Apr 24, 2006 10:27 pm

your maf is very good I get 256 max but my timing is a lot higher than yours .

just to pick 2 points.

rpm 5480 i get 15.8 BTDC
rpm 6880 i get 24 BTDC

Post by **MarkB** » Tue Apr 25, 2006 7:34 am

I'm thinking I've got an air leak. I think I'll log boost to see how that looks...

Post by **MarkB** » Tue Apr 25, 2006 11:05 am

MarkB wrote:I'm thinking I've got an air leak. I think I'll log boost to see how that looks...

I ran a log on 115 this morning... I think it confirms I have a boost leak. Anyone else agree?

revs load Spec Actual
/min % mbar mbar

2080 42.90 1000 1030
2120 65.40 1400 1010
2280 106.0 2280 1180
2400 133.1 2250 1410
2600 164.7 2250 1700
2880 191.7 2260 2040
3120 190.2 2260 1980
3360 185.0 2230 1940
3640 184.2 2210 1940
3840 181.2 2180 1960
4040 131.6 1390 1750

I didn't rev it too high, not wanting to over stress the turbo's more than needed...

Thanks

Post by **Nige_RS4** » Tue Apr 25, 2006 11:31 am

Mark, looks like it to me - have you checked your BPV's and TBB recently - these are the most likely culprits. Note - you will need to take the tbb off to check it - it's a bit of a pain, but still a DIY job.

Post by **CliveH** » Tue Apr 25, 2006 11:53 am

Nige_S4 wrote:Mark, looks like it to me - have you checked your BPV's and TBB recently - these are the most likely culprits. Note - you will need to take the tbb off to check it - it's a bit of a pain, but still a DIY job.

I'd check the F-pipe too - definitely need to take that out to check it and best done whilst TBB is off - have one of each to hand! My money would be on the F-pipe.

Post by **MarkB** » Tue Apr 25, 2006 12:03 pm

Looks like I'll be out in the garage late tonight

Post by **Nige_RS4** » Tue Apr 25, 2006 12:08 pm

My money would be on the F-pipe.

I'm not normally a betting man Clive, but the odds are against you - F hose failures are still quite rare, whereas TBB failures are almost guaranteed with chipped cars - I replaced mine with a samco as soon as I bought my S4.

Post by **MarkB** » Tue Apr 25, 2006 12:09 pm

I'll let you know later what I find...

Post by **CliveH** » Tue Apr 25, 2006 1:38 pm

Nige_S4 wrote:
My money would be on the F-pipe.
I'm not normally a betting man Clive, but the odds are against you - F hose failures are still quite rare, whereas TBB failures are almost guaranteed with chipped cars - I replaced mine with a samco as soon as I bought my S4.

Fancy a tenner on it Nige? I've witnessed 2 in the last 2 weeks...

RS246.com Forum :: The World's #1 Audi R, S and RS Enthusiast Community

To VAG-Com users, FATS times database for the Euro S4s

Who is online