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WAJWO
Newbie
Joined: 26-November-2004
Status: Offline
Points: 3
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Topic: E39 528 Power Boost? Posted: 26-November-2004 at 10:15 |
Hi guys
Have just registered, and can't see a thread about this anywhere?
I have heard that the 193bhp I get from my 528 T-Reg is intentionally suppressed, but I have no idea how to unleash the power waiting therein?
Is this something my local garage can do by replacing a few parts, or is it more serious (taking the engine to pieces, grinding bits of the engine block etc)?
As you can tell (!) I know very little about cars and would only want to spend about £100-£200 to be honest, so no nitrous injection or anything, just taking it to 230bhp or whatever is possible by buying a few parts and giving them to my mechanical friend?!
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AHEALY
Really Senior Member II
Joined: 05-February-2004
Location: Ireland
Status: Offline
Points: 946
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Posted: 26-November-2004 at 11:11 |
A re-mapping of your ecu will give you an extra 10% or so, and a similar increase in torque. Ask Chippeduk for a price but I think its £125.00.
The biggest restrictor is the air intake manifold (m52) taken from the 2 litre model. If you can get your hands on an m50 manifold from a scrapped e36 or e34, Alpina527 will do his magic on it. If you are lucky you might pick up a scrapped one for about 70 quid. You could also do with a big bore throttle body. Alpina527 has a full conversion kit which I will be getting myself shortly, and I think it costs about €350.
If you get the Throttle body/Manifold job followed by the re-mapping you could free an extra 30bhp plus.
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Ado
'97 523i & 95 M3
97 Subaru Impreza WRX Sport Wagon (sold)
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spokey
Bavarian-Board Contributor
Offensive and obnoxious tub of lard
Joined: 02-March-2004
Location: United Kingdom
Status: Offline
Points: 1948
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Posted: 26-November-2004 at 11:47 |
Or just turn off the DSC if it was anything like mine...
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Ciao,
Spokey
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WAJWO
Newbie
Joined: 26-November-2004
Status: Offline
Points: 3
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Posted: 26-November-2004 at 12:22 |
Cheers chaps - hmmm
So about €350 for 35bhp
Say €10 per 1bhp
Sounds like quite a lot - not compared to the price of a car obviously, but not cheap as chips.
Do you think 35bhp would be noticeable and great, or barely noticeable or put me in a hedge sideways?!
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studyolic
Really Senior Member I
Joined: 09-July-2004
Location: Inchture, Dundee, Scotland.
Status: Offline
Points: 427
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Posted: 27-November-2004 at 15:05 |
If you already have 193 bhp, I think you would only notice the extra 30
bhp under hard acceleration, at higher revs. I don't know how a bigger
throttle body/air intake and remapping the ecu with a chip affects torque,
but I would bet that an increase in torque would be more noticeable
more of the time. Maybe chippeduk can tell us how a chip affects the
torque?
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Richard.
Current; 2000 316i Compact 1.9
previous; 1999 535i V8,
1995 316i Compact 1.6
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WAJWO
Newbie
Joined: 26-November-2004
Status: Offline
Points: 3
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Posted: 28-November-2004 at 14:54 |
That's what I was thinking - an increase in torque would probably be more useful/noticeable in general.
What I could really do with is a chip that removes 90% of drivers from the road and turns all traffic lights green...
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chippeduk
Really Senior Member II
ECU Tech
Joined: 04-June-2004
Location: United Kingdom
Status: Offline
Points: 696
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Posted: 28-November-2004 at 15:06 |
the torque will be noticable on midrange acceleration but in true terms you wont always notice the extra 10hp or so a chip makes.
Saying that, you always notice the loss of the flat spots and the better fuel economy.
The inlet manifold mod on the other hand is highly noticable and the extra pull from this mod is lovely.
I think the best way to describe the chip and remap is that the engine becomes far more lively.
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studyolic
Really Senior Member I
Joined: 09-July-2004
Location: Inchture, Dundee, Scotland.
Status: Offline
Points: 427
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Posted: 28-November-2004 at 15:49 |
Chippeduk
how much for a chip for a 1999 535i, and what are the figures like for
BHP, torque and economy?
Cheers
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Richard.
Current; 2000 316i Compact 1.9
previous; 1999 535i V8,
1995 316i Compact 1.6
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chippeduk
Really Senior Member II
ECU Tech
Joined: 04-June-2004
Location: United Kingdom
Status: Offline
Points: 696
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Posted: 28-November-2004 at 17:00 |
map only and the price is £125.
power gains are around the 18hp mark with 12hp over 3400rpm
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dave 328
Really Senior Member II
Joined: 21-October-2003
Location: United Kingdom
Status: Offline
Points: 835
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Posted: 29-November-2004 at 08:25 |
I've done all the mods and can say the engines delivers as a 2.8 should and not be flat or run out of puff in higher revs.
See Alpina527 for a manifold and big bore throttle body and chippeduk for a remap, it will be worth while!!
I've done my mods instages so didn't get a full blown boost in power in one go as some have experienced. But I still noticed an improvement after each individual mod!!
M50 Manifold = revs better mid range and will pull stronger to redline from 4,500rpm instead of getting constipated at 5,000rpm and having to change gear as there isn't much go after this.
Remap = a noticable cleaner pull below 3,000rpm and a bit more free reving at the top end and a slightly nicer noise!! MPG should be about 5-10% better, but I haven't really noted it yet - the throttle seems to have a bit of a sinking feeling.
BBTB (big bore throttle body) = Increased throttle response low down and a better pull to the red part of your tacho.
Fit a good induction kit to embellish the above mods (esp. the manifold/BBTB) as the std air box can be restrictive in this setup.
The above mods won't give a fish tailling slide into the nearest tree, but will give a good improvement over standard giving proper 2.8 performance instead of the constipated feel of the std setup.
Edited by dave 328
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328 Coupe Sport, Digital climate, full leather, OBD computer, De-restricted with M50 manifold, big bore throttle, chippeduk remap, custom cold cone intake and X-brace
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