W202 owners .........

[Laters]

I take it that you havent got any engine mods?

The car is as I bought it. Think its stock. Its my everyday driver so dont really want to modify it engine wise. (thats what my quantum is for )

 

[silverarrow]

daft question but how much for k and n filter and how much difference in mpg
am i correct in that you can wash a k and n filter and ?? re oil
my friend had a m3 bmw but the injectors kept getting clogged with k and n he said

 

[pluggers]

Just tried mine with the K&N 9.9 seconds.I reckon with practice it could be better with either filter but not by much.One thing that puzzles me is that in another thread it was said the overall diameter of my wheels is about 9mm larger than it should be,will this affect my gearing slightly and throw off the speedo(will it read high or low?)

 

[R2D2]

ohh good question.?? If the wheel is larger, then in one revolution it will have travelled further than the standard tyre. That means your car is underrecording mileage because its basing the calculation or a smaller diametre wheel. As for speed???????

 

[Dieselman]

ohh good question.?? If the wheel is larger, then in one revolution it will have travelled further than the standard tyre. That means your car is underrecording mileage because its basing the calculation or a smaller diametre wheel. As for speed???????

The same will be true. The speedo will be under reading.

 

[pluggers]

The same will be true. The speedo will be under reading.

Thank god for a bit of give and take on the speed cameras.So if its reading under I could have been stoping the clock at nearer 65mph than 60 mph.In which case I doubt that I shall ever get a decent 0-60 time by using a stop watch.

 

[Maff]

You need one of these little boxes:

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=72205&item=7950498273&rd=1&ssPageName=WDVW

I have one and recorded by 0-60 times, as well as the Nissan 300ZX and my friends R32. I paid about £55 I think.

Anyone is welcome to borrow it if you want, used it three times and never been used since!

 

[GrahamC230K]

Anyone is welcome to borrow it if you want, used it three times and never been used since!

OK! Next time I am passing

 

[Dieselman]

Matt

Why didn't you say before?

All the messing about on rolling roads could have been avoided. All one needs to do is compare acceleration before and after a mod to obtain true torque / BHP gains.
Also one can plot the torque curve for best acceleration for any given car.

It would have been interesting for Graham to have tested his car B&A the chip mod.

 

[Maff]

True, I should have mentioned that I have had one for about 4 years!! (Well, I had two, I sold the first one after I sold my CLK230K)

To be honest it's only any good (and very accurate at that) for 0-60, 0-100 and 1/4mile times as well as G-Force.

Measuring BHP and others has always given me bad results, so as an accelerometer you can't beat it.

Only trick is sticking it to the dash where it can be seen and is very stable, otherwise you get bad results.

 

[glojo]

Thank god for a bit of give and take on the speed cameras.So if its reading under I could have been stoping the clock at nearer 65mph than 60 mph.In which case I doubt that I shall ever get a decent 0-60 time by using a stop watch.

Morning Pluggers,
I am a bit slow this morning, so please correct me if I am completely wrong. Are you suggesting that you think your speedometer might be reading on the 'low' slide? Namely if your speedometer states 60mph, your real speed might be 65mph?

If my suggestion is correct, then I am of the opinion that you have an individual problem, or modification issue. Manufacturers have a reasonable percentage leeway for optimistic claims but none for just the opposite.

Any car owner that could prove his speedometer was reading 'low' must surely have a **defence against a speeding fine.

**Obviously reckless speeding, tampering with, or modifying the speedometer, wheels etc. will invalidate that statement. I am simply saying that a bog standard car, with a bog standard untampered with speedometer should never read on the low side.

We are reading of prosecutions for speeds of 32mph in a 30mph speed limit. Usually the car speedometer will be indicating a speed in excess of the prosection states.

Sorry if I have got this completely back to front.

Have a nice week-end,
John

 

[Maff]

Talking about the AP22 meter here made me get it out of the box this morning for an early morning blast.

Best I managed to achieve from three runs were:

0-60: 4.80sec
0-100: 10.80sec

Just need to learn how to control the wheel spin! Those numbers were with ESP still switched on. May have been faster with it off as it always cut in on those three runs.

 

[GrahamC230K]

The things we do for Greg on a Sunday......


I think we all accept we are comapring by crude measurement (apart from Maff) but here goes.

I did one run. Full tank of fuel, road actually had slight incline (doh!), just me driving.

I figured if I dipped the clutch as I past approx 62 mph instead of changing to 3rd I could operate the stopwatch on my phone in my cradle. Worked easily really.

I dumped the clutch at 4000rpm (hence only one run!). The 245's did a good job and mostly held traction. Holding onto 2nd into my newly avilable rev range (from the remap) up to 6500rpm I stopped the clock as I passed 60 mph. Allowing for reaction and knowing by GPS I only over read by 3mph at 60mph, I think I timed to an actual 60mph as good as can be expected with such crude techniques!

The time: 6.8 secs.

I am pleased with that and happy to do it again with Maff's kit if (when ) I get the chance.

 

[R2D2]

Well done graham 6.8 pretty darn good isnt it!

Some rule of thumbing coming up........

If pluggers car is non modded 2.0 liter car with standard 136bhp and does 0-60 in 10.4,

then a chipped 2 litre car with 150bhp (mine) should do 0-60 in 9.4 which it did, so when I had my car running optimax and a k & n and achieved 8.4secs did this mean I was running 168bhp?

Therefore Grahams car achieved 6.8secs Therefore his car has 207 BHP??

This means a C180 with 122bhp should take 11.5 secs??

This obviously assumes the cars are the same weight and the drivers are capable of thrashing them (which of course we are!)

PS. Using the same rule of thumb a 306bhp C43 should take 4.6secs!!!!!!!!!

OK C180 and C43 drivers go and prove the theory!

 

[Will]

The things we do for Greg on a Sunday......


I think we all accept we are comapring by crude measurement (apart from Maff) but here goes.

I did one run. Full tank of fuel, road actually had slight incline (doh!), just me driving.

I figured if I dipped the clutch as I past approx 62 mph instead of changing to 3rd I could operate the stopwatch on my phone in my cradle. Worked easily really.

I dumped the clutch at 4000rpm (hence only one run!). The 245's did a good job and mostly held traction. Holding onto 2nd into my newly avilable rev range (from the remap) up to 6500rpm I stopped the clock as I passed 60 mph. Allowing for reaction and knowing by GPS I only over read by 3mph at 60mph, I think I timed to an actual 60mph as good as can be expected with such crude techniques!

The time: 6.8 secs.

I am pleased with that and happy to do it again with Maff's kit if (when ) I get the chance.

Bl**dy hell Graham - that's not bad at all! Quicker than the 'published' figure for a C36!

Would you have been able to hit 60 in 2nd before the re-map? If not, that must surely save you several 1/10ths of a second?

Good Stuff!

Will

 

[GrahamC230K]

I don't think you can make assumptions like that Greg.

I expect the gearing has a lot to do with it.

I havea Top Gear report from 1996 when they tested a manual C230K. They best 0-62 they could get was 7.7 seconds.

They complained of axel tramping as a result of wheelspin (they were using 15" probably 205 tyres) and would have had to change to 3rd to actually reach 60mph.

What gear do your 4 and 5 speed autos hit 60 in?

 

[GrahamC230K]

Bl**dy hell Graham - that's not bad at all! Quicker than the 'published' figure for a C36!

Would you have been able to hit 60 in 2nd before the re-map? If not, that must surely save you several 1/10ths of a second?


Will

No. The remap has moved the rev limiter to 6500rpm so I can now hit 60mph in 2nd where as before it was 3rd.

It sure felt quick when launched at 4000rpm. A real hang on moment!

I got lucky too, the car wanted to go, so I dropped the clutch right, but didn't overly wheelspin.

 

[R2D2]

I didnt notice what gear but I reckon it was still in second on my remapped car.

 

[R2D2]

OK the brochure claims are in black with dynoed and modified cars in Red

C180 122bhp 12sec man/13/sec auto top speed 120mph

c220cdi 125bhp 10.5/10.8 auto top speed 123mph

c200 136bhp 11sec man/11.5sec auto top speed 124mph

C200 136bhp 10.4 sec Auto Pluggers

C200 with K &N 142bhp 9.9sec Pluggers with k&N

C200 chipped 150bhp 9.4sec auto Top Speed 137mph R2D2

c250td 150bhp 10.2/9.9auto topspeed 126mph

c240 170bhp 9.9auto top speed 135mph

c230k 193bhp 8.4sec man/8.4 sec auto top speed 143mph

C230k chipped 207bhp 6.8 manual top speed 146mph Graham230k

c280 197bhp 8.5 auto top speed 144mph


The first thing this proves is that MB's claims are way off. They underestimate performance by loads but that there is a trend to these figures. Has anyone got the ability/software to plot a graph of these figures to see if you can see the trend and therefore predict what a cars performance or bhp is from known figures..

PS Did your car dyno at 207bhp??

 

[Will]

No. The remap has moved the rev limiter to 6500rpm so I can now hit 60mph in 2nd where as before it was 3rd.

It sure felt quick when launched at 4000rpm. A real hang on moment!

I got lucky too, the car wanted to go, so I dropped the clutch right, but didn't overly wheelspin.

Excellent!