345ps MTM S3

1.8 I4 20v turbo - 207bhp
1.8 I4 20v turbo - 222bhp
Ryan_s3
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Post by Ryan_s3 » Thu Jan 06, 2005 7:02 pm

dyno's actually measure whp(well torque really) the correction is made by the run-down by dipping the clutch and measuring the resistance.
Image360bhp 342lb/t

DavidT
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Post by DavidT » Thu Jan 06, 2005 8:16 pm

So how do you actually get the calculated power figure (top line)? It can't be from the wheel power clearly. Bit bleedin' confusing this.
The flywheel horsepower is calculated by the dyno.

Basically before the power run, the car is taken to max revs in the gear chosen for the power run, then allowed to freewheel on the dyno with the clutch in. This calculates the transmission losses. A bit rough and ready but the best estimate you can get.

Ryan_s3
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Post by Ryan_s3 » Thu Jan 06, 2005 10:03 pm

i think you'll find they do this after the power run.
Image360bhp 342lb/t

BOWS3
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Post by BOWS3 » Fri Jan 07, 2005 12:21 am

@VST, well said mate. I drove an S3 with your conversion and the difference between it and my remapped car was huge. As you said , strong pull to the top.
As for RR figures, they're not the be all and end all. We drive our cars on the road ! If the gains are good on the road then great.
From what I understand, and I must admit that you guys are probably more experienced, the same car can produce a different figure on a different day( and RR ). Friend with a LCR custom mapped at Jabba produced 285bhp. At Stealth it was 261bhp. Read into that what you will. Quicker than mine though. Bitter! ME ! No,no!

Regards, Chris.

RS4_Barry
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Post by RS4_Barry » Fri Jan 07, 2005 8:11 am

Ryan_s3 wrote:Just as a point of interest my mildly chipped s3(haldex) lost 59bhp through the tranmission, figures were 185atw and 244 at the fly.This dyno test was performed at Owen Developments who do all the tuning on the mr-400 evo for mitsubishi and i consider one of the best.
These figures are about right for a chipped S3. There are some slightly higher up to 195 at the wheels but average for a chipped S3 is around 180-190 WHP.
Star Performance Misano Red RS4
548bhp 490lbft

RS4_Barry
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Post by RS4_Barry » Fri Jan 07, 2005 9:08 am

Anyway probably should discuss stuff like this here. http://rs246.com/index.php?name=PNphpBB ... 5332#65332
Star Performance Misano Red RS4
548bhp 490lbft

J
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Post by J » Tue Mar 08, 2005 3:21 pm

Could you post some pictures of your car? I have simillar set on my S3 and i am planning brake update on my car and would like to see what does it look like with 345mm disks.

DeadEye
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Post by DeadEye » Fri Mar 11, 2005 5:09 pm

VST, I have a question!

I downgraded from a E46 M3 to a 225 S3 last week. The car in standard for appeared to be severely conjested and to be fair to a 20v engine, it doesn't appear to want to rev. on the way home from collecting the car it went into AMD for a remap - which return 261/285 (Hp/Ft lb). Although there is a lot more power on spool up as well as through the range, it still drives like a deisel. All its power is between 2000rpm and 5,500 rpm.

a) Is this normal? (coming from an M3 is never going to be good as it reved right up to 8000rpm with great ease)

b) Does/Did changing the manifold and/or increasing the turbo size effect the performance at high revs?

I have to say that my M3 would not catch my S3 around the roundabout on my estate :-) as it is - but my S3 with the same power as my M3 would be fecking nice! - but only if it had this power ALL the way through the revs.

At the moment it is like the gears are too short, you can't really do 60 in second which explains the crap standard 0-60 figure for an S3.

I am also interested in the clutch you used, the M3 clutch was very, very strong which was great when you had a dry day with lots of grip. The S3 on the other hand seem happy to slip the clutch very easily.

A lot of questions I know, but important ones for me! When I sell the house that caused me to sell the M3 for the S3 - do I buy another M3 or spend £5-£7k on my S3? To be fair - the S3 is more fun to drive!

VST
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Post by VST » Fri Mar 11, 2005 9:08 pm

Do a search on here,all these questions about my(now long gone) S3 have been answered in detail before.

But, yes the car was as quick as an E46 M3,yes it handled better(but only after throwing a wheelbarrow load of money at it,I'm sure an M3 with the same budget spent on suspension and brakes would be awesome,actually,watch this space,as I'm building one for a customer at the moment)

I used to change gear in the big turbo car at 7100 or 7200......so it gives the car the extended rev range it really needs.

The clutch was an MTM paddle using OE pressure plate and release bearing/slave cyl, worked very well,a pretty mild paddle clutch in comparison to what some of the RS4 boys are using or the clutch in my Corrado.

Cheers

Tom
MTM RS4

DeadEye
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Post by DeadEye » Mon Mar 14, 2005 6:26 pm

Hmm, that was a "nob off" answer. I won't ask again :-(

bjacks
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Post by bjacks » Mon Mar 14, 2005 8:00 pm

DeadEye wrote:Hmm, that was a "nob off" answer. I won't ask again :-(
In Toms defence, I doubt he meant to fob/nob you off mate. There have been some pretty in depth discussion on 246 over last coupe of years and the search tool brings up a lot of old posts which are pretty useful indeed. I sat for hours and hours looking through the RS4 post before buying one and asking previously discussed questions, but I guess sometime people do go over old ground by mistake.

In answer to one of your issues, the AmD re-map has always been pretty famous for having no grunt at the top end (as has std MTM 265) The likes of APR and Revo took a different view and provided less initial punch, but followed by a more linear power delivery to the top end.

I had a Revo tuned S3 and to be honest, I prefered to use the mid range grunt and not rev the <beep> out of the car - so basically I should have had an AmD/MTM map :D Some will take the view that AmD/MTM are playing safe by not sustaining high boost at the top of the rev range.

The standard K04 will obviously not flow massively at the top end so that is where big turbos come into play. The 1.8T will never rev as freely and gratefully as an M3 lump without SERIOUS mods.

Don't forget the likes of Jabbasport who also get big numbers from their IHI based big turbo kits.

All the best mate,

Ben

VST
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Post by VST » Mon Mar 14, 2005 8:05 pm

I answered some of your questions and pointed you in the direction of more info and discussion on the topics you mentioned.

How exactly do you interpret that as a "nobb off" reply?


As for whether you should buy another M3 or tune your S3, the only person capable of answering that question is yourself,how the <beep> would I know?

:roll:
MTM RS4

david7m
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Post by david7m » Mon Mar 14, 2005 8:28 pm

Anyone tried this ?

http://www.jabbasport.com/
APR 270bhp S3, Mixer K6 750

Cheap performance tip - lie the rear seats flat Image

david7m
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Post by david7m » Mon Mar 14, 2005 8:30 pm

Couldn't get direct link to the bit I was trying to show you. You'll need to click on 'Turbo Kits', then '4 wheel drive' on the bottom right.
APR 270bhp S3, Mixer K6 750

Cheap performance tip - lie the rear seats flat Image

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DuncS3
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Post by DuncS3 » Mon Mar 14, 2005 9:00 pm

You cant get the Jabba kits unless you buy the kit yourself...long long waiting list for the conversion...

Dunc

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