Dyno day @ Surrey Rolling Road Sat 8th November

[bss325i]

Jimbom30cab E30 M52B28 M50 inlet/BTB mani + system/BBTB/chip 215/210

Etouring E30 touring M52B28 M50 inlet/scorpion rear/no centre/chip 222/217



Could this be a case of the BTB not being "all that"

The BTB on the M52 is totally different to the proven M20 BTB2.

Besides, Jim's was running VERY rich at the top end and clearly has an issue with it.

[Simon13]

Well i didn't have a bad day at the office, the M5 needs some more TLC to get the missing top end back but the torque is on the money, the missing hp will no doubt bring the torque up a touch also. Fueling is good which i guess is important but the S38 is sensitive to alot of factors like valve clearances which i've not checked yet.

B3? Its running lean so points to my 2nd hand MAF not being much cop. A new one i expect will get me close to stock power again and considering its covered 228,000 miles now shows how good these M5X engines are

[magpie]

good reading

[Simon13]

Winxs M52 is my old engine from my 328. its stock bar the M50 inlet and 180,000 miles under its belt. 222bhp no messing.

[magpie]

Winxs M52 is my old engine from my 328. its stock bar the M50 inlet and 180,000 miles under its belt. 222bhp no messing.

barely run in

[Simon13]

oh that engine is well run in! And its a original nikasil engine also. They didn't all fail!

[rich318i]

oh that engine is well run in! And its a original nikasil engine also. They didn't all fail!

Mine the same 150k ish on it and never skips a beat

[pony]

I am amazed at some of these high mileage engines producing or very close to factory bhp

Is there some truth to high mileage cars tend to have healthier engines than low mileage cars ?

[ross_jsy]

It's more a case of something that is driven regularly on say a motorway for long distances experiences less wear than lots of small journeys

[gooner1]

I am amazed at some of these high mileage engines producing or very close to factory bhp

Is there some truth to high mileage cars tend to have healthier engines than low mileage cars ?

Think it's more how the mileage was accumalated mate.
Lots of short journeys are worse than decent long runs.

[Blitz]

M52's always seems to make there power even at high mileage. Even my stock 328i feels pretty muscular.

[reggid]

I thought the btb fannymould gave an extra 20 ponies @ the spare wheel?

Last time i had it dyno'd with just the BTB i had it done at SSR and Evolve on the same day.

It made 183bhp/190/lbft at SSR and 185bhp/190lbft at Evole so 15 shetlands and 20 torques from the fanymold.

Something is obviously now amiss.

could be as simple as how they strapped her down. apparently evolve strap them down quite loose so the car climbs onto the front roller more. if you strap it down hard it makes a big difference (lower numbers).

[bss325i]

I thought the btb fannymould gave an extra 20 ponies @ the spare wheel?

Last time i had it dyno'd with just the BTB i had it done at SSR and Evolve on the same day.

It made 183bhp/190/lbft at SSR and 185bhp/190lbft at Evole so 15 shetlands and 20 torques from the fanymold.

Something is obviously now amiss.

could be as simple as how they strapped her down. apparently evolve strap them down quite loose so the car climbs onto the front roller more. if you strap it down hard it makes a big difference (lower numbers).

Well the 177bhp/183bhp were both on SRR's Dyno.

[pony]

How do they measure power at the engine and power at the wheel ?

[bss325i]

I checked the air temps of both SRR's graphs and the temps when it made 183 were 12 Ambient 17 Intake and when it made 177 today they were 16 ambient and 17 intake.

Someone on FB suggested that the higher difference in A/I temps when it made 183 compared to today's 177 could be down to a bigger correction factor.

[bss325i]

How do they measure power at the engine and power at the wheel ?

Google it.

[ross_jsy]

Don't get too hung up on dyno figures Barry, I look at them as a ball park estimation. So many different factors can affect a reading.

[bss325i]

Indeed there are so many variables but i thought it would be the same if not better with the addition of the chip and BBTB.

Mid range part throttle response certainly feels better with the BBTB. The same kind of difference with the Sport button on an E46 M3.

[ross_jsy]

Thought about a custom map?

But then again, if you are happy with how it feels there is no point chasing numbers

[bss325i]

It certainly feels strong enough and Matt with the 330Ci had to go some to keep up on the way to the Dyno today.

As for custom map, AFAIK the motronic 1.3 can't be live mapped. You need an emulator of some sort and a eprom burner.

A faff in other words.

[rich318i]

Who was the best run today as in mods to the standard spec would you say?

[bss325i]

Probably James's 335i with 354bhp and 400lbft from the Dinan map.

[pony]

James did very well
Hard to believe is all from a remap
335i (for some reason) seem to respond well to remap

[Nobby_N]

Good read this chaps! Quite jealous tbh! After slating most of you at some point would quite like to attend one of these! If only to see if Pony really is Armani B

[bss325i]

James did very well
Hard to believe is all from a remap
335i (for some reason) seem to respond well to remap

Because turboz innit.

[rich318i]

Drove a 335i today and they are off.

New E30 engine implant for 2020 ??

[DanThe]

Barry I would put it down to that standard exhaust full of baffles, dead ends and corners

[DanThe]

Jimbom30cab E30 M52B28 M50 inlet/BTB mani + system/BBTB/chip 215/210

Etouring E30 touring M52B28 M50 inlet/scorpion rear/no centre/chip 222/217



Could this be a case of the BTB not being "all that"

Unknown 'chip' on Jims I believe, all my maps put out 220+ which is a very accurate figure

[reggid]

Last time i had it dyno'd with just the BTB i had it done at SSR and Evolve on the same day.

It made 183bhp/190/lbft at SSR and 185bhp/190lbft at Evole so 15 shetlands and 20 torques from the fanymold.

Something is obviously now amiss.

could be as simple as how they strapped her down. apparently evolve strap them down quite loose so the car climbs onto the front roller more. if you strap it down hard it makes a big difference (lower numbers).

Well the 177bhp/183bhp were both on SRR's Dyno.

that's actually pretty close, for some reason i thought you were down more than 6bhp, and what that was about 6 years ago?

i think you are probably chasing something that doesnt exist.

[rich318i]

Whats your 3.0l pulling Dan? Id like to get close to the yanks so called 280BHP as some over the pond say they can make

[pony]

Barry I would put it down to that standard exhaust full of baffles, dead ends and corners

This .... Barry had Scorpion rear box and another sports exhaust centre box which probably would have helped power. I also think could be maybe the exhaust.

[reggid]

How do they measure power at the engine and power at the wheel ?

dyno dynamics just multiply bhp x 0.8 to get wheel hp and from wheel hp /0.8 to get bhp.

it doesnt measure coastdown losses like others

[rich318i]

Whats your 3.0l pulling Dan? Id like to get close to the yanks so called 280BHP as some over the pond say they can make

[jimbom30cab]

Hi Dan, I thought you mapped the ECU when you took the EWS off ??

[DanThe]

Hi Dan, I thought you mapped the ECU when you took the EWS off ??

I cant remember Jim, did you have the remap too?