e46 m3 what should 0-100 be

[stef1808]

I Vbox'd my car. Its an e46 m3 coupe, 78k miles on the clock with a GeoffSteel air box, custom exhaust and tune from chipwizards.

On the vbox i did 0-60 5.5 and 0-100 in 12.3

The 12.3 seconds sounds a lot to me where stock is claimed to be 11.2.

Is it worth to take it for a compression check or something? perhaps a new tune?

[LordHaveMurci]

Perhaps, it being your own personal car, that you never ragged it as hard as a journo would've ragged a press car back in the day? Or perhaps you din't get a perfect start off the line due to temperature, surface grip, tyres pressures, driver skill etc?

[stef1808]

Thanks for your reply. Yes, I also considered all those possibilities but cant give much credit to them. I do a bit a racing myself and feel comfortable i can launch the car reasonably well off the line and not afraid to rag the car.

Even more so my m3 is a track car with light weight front seats and no rears. its even on sticky rubber which should help the launch. with all the said, and a few engine mods, there is no reason for it to be slower than stock.

It could just be in my mind but the car feels slow.

[Leins]

I would say it's worth doing a compression test regardless to ensure everything with the S54 at that mileage is OK anyway. I'll be getting it done on mine next month (56k) for peace of mind, despite not having any suspicions

However, those performance figures sound pretty good to me. Try not bothering with the clutch on 1st to 2nd next time though to save a couple of tenths

[Schermerhorn]

Give it a service. It's cheap enough anyway. Should restore some BHP.

When I serviced my M6 two weeks ago, it felt like the car had gained another 50BHP.

[stevesingo]

Is the claimed 0-60 4.5sec?

That will be where you are losing out. In order to remove the starting technique variable, compare the 60-100mph time.

12.3-5.5= 6.8
11.2-4.5= 6.7

Not so far away now.

[e36er]

I seem to remember getting something like a 5.1 in my old E46 M3 road car. I've also raced an E46 for a few seasons, even with a lot less weight, more power and sticker rubber, the road car would definitely launch better.

[Wills2]

stevesingo said:

Is the claimed 0-60 4.5sec?

That will be where you are losing out. In order to remove the starting technique variable, compare the 60-100mph time.

12.3-5.5= 6.8
11.2-4.5= 6.7

Not so far away now.

IIRC the official 0-62 mph for the manual was 5.2 secs or if you like 5 sec to 60mph, the e92 manual was 4.8 to 62 or 4.6 to 60.

[Alpinestars]

In getting a 0-100 time of 11.2, the 0-60 was 4.5. So 60-100 in 6.7.

http://fastestlaps.com/cars/bmw_m3_e46.html

[Wills2]

No way the e46 manual did 0-62 in 4.5 secs or 60 for that matter, it was never that quick (I owned one) but drove very well, the best I got out of my CP DCT e92 was 4.9 to 62.

I think the OP's stats are probably spot on.

[MOTK]

stef1808 said:

Thanks for your reply. Yes, I also considered all those possibilities but cant give much credit to them. I do a bit a racing myself and feel comfortable i can launch the car reasonably well off the line and not afraid to rag the car.

Even more so my m3 is a track car with light weight front seats and no rears. its even on sticky rubber which should help the launch. with all the said, and a few engine mods, there is no reason for it to be slower than stock.

It could just be in my mind but the car feels slow.

I had a very similar setup to you on my m3, Geoff steel box, map, front buckets, PSS, manual. I managed a 4.7 0-60 and 11.0 to 100 with mine. Took a few goes to get that though. Assuming you're getting a decent launch (use the sport button for this (all other times I had this off as it ruined throttle response for me)), I would suggest you're engine as a few ponies missing?

[stef1808]

MOTK said:

I had a very similar setup to you on my m3, Geoff steel box, map, front buckets, PSS, manual. I managed a 4.7 0-60 and 11.0 to 100 with mine. Took a few goes to get that though. Assuming you're getting a decent launch (use the sport button for this (all other times I had this off as it ruined throttle response for me)), I would suggest you're engine as a few ponies missing?

that sounds more like it. guess a compression check is in order

[nick1275]

I borrowed a mates v box last year to see what my e39 m5 was doing, had half a dozen launches, only managed one sub 5 sec, the rest where mid to low 5's, which is slower than book. However in gear acceleration was about what it should be. I personally wouldn't get hung up on 0-60

[Schermerhorn]

Nobody should be doing 0-60 times unless they want to obliterate the clutch and the drivetrain.

[Alpinestars]

Wills2 said:

No way the e46 manual did 0-62 in 4.5 secs or 60 for that matter, it was never that quick (I owned one) but drove very well, the best I got out of my CP DCT e92 was 4.9 to 62.

I think the OP's stats are probably spot on.

Agreed. Always pretty difficult to achieve published 0-60 times in any case, but especially optimistic ones like 4.5.

OP I'd suggest you focus on the 30-100 time before you blow up your transmission.

[robbiekhan]

Sorry for the year old bump, but this came up on a search result (whoah someone used search!!).

Alpinestars said:

Agreed. Always pretty difficult to achieve published 0-60 times in any case, but especially optimistic ones like 4.5.

OP I'd suggest you focus on the 30-100 time before you blow up your transmission.

It depends. In ideal conditions (good tyres, warm tyres, dry climate and level tarmac etc etc) it's all possible.

At 70MPH my speedo is 3MPH out compared to GPS, so with that in mind, check out a run I did a while back with my convertible with an eventuri and remap from Evolve (20HP + 15Nm gain, accelerates all the way to 8300 instead of tailing off from 7000 as stock.

https://www.youtube.com/watch?v=HVrilkGtVNc

I didn't shift 1st to 2nd as quick as the other gears, else it would have been a fraction quicker still. I didn't hit redline fully in any gear either but aimed to shift before the needle dipped too far into 6000rpm (all the power gains from the remap are from 6000rpm).

Edited by robbiekhan on Wednesday 5th October 01:38

[Evolved]

Is it really that important?

[robbiekhan]

Absolutely not, but you know what people are like these days

It doesn't help that makers all too often bang on about ring lap times and 0-60 times though.

[andyman_2006]

Auto car tested it at launch, manual car:

0-60 - 4.8
0-100 - 11.5
1/4 mile - 12.3 I think?

Think the report is somewhere online was way back in 2000

I have the magazine still somewhere.

Andy

Edited by andyman_2006 on Wednesday 5th October 12:31

[robbiekhan]

andyman_2006 said:

Auto car tested it at launch, manual car:

0-60 - 4.8
0-100 - 11.5
1/4 mile - 12.3 I think?

Think the report is somewhere online was way back in 2000

I have the magazine still somewhere.

Andy

Edited by andyman_2006 on Wednesday 5th October 12:31

Expect those numbers to be better these days due to stickier UHP tyres compared to the standard Pilot Sports from way back then.