ebay tuning kits

Tyres, exhausts, suspension, strut braces, air filters, brake pads/rotors and anything else for 'dawn raiders'.
Post Reply
User avatar
chris1984_99_99
Joined: Sat 01 May, 2010 17:24
Posts: 200

  Z3 roadster 2.0
Location: Troon

ebay tuning kits

Post by chris1984_99_99 »

I know the old saying, if its too good to be true it probably is, but looking around on ebay last night i found a few interesting (and suspiciously) cheap options to get some extra power from the car. Ive been thinking of getting my 2L Z3 remapped but saw these on ebay for buttons. Im just curious to see what everyone else thinks of them? Im thinking they would probably destroy the engine if theyre so cheap!

http://cgi.ebay.co.uk/TUNING-BMW-116-11 ... 1e5be6f8f0

and

http://cgi.ebay.co.uk/Tuning-Chip-5-25- ... 3effdf8144
User avatar
msassoon
Joined: Fri 23 Apr, 2010 16:31
Posts: 406

  Z3 roadster 2.8
Location: Crowthorne

Post by msassoon »

The first one is really odd. You get power gains by adding a strain on the battery? Not sure how that is going to work! It is not even in the main battery circuit, so what is it doing to the power going into the car? It is sapping off some of the peaks to make them more even possibly. Not sure that will help, replacing the cables in the car would give a better result.

As for the second, changing the electrical characteristics of the car that the ECU assumes is a certain way is never a good plan.

So, to good to be true for a reason. Nothing replaces a good remap and basic tuning to air in and out.
estocks
Joined: Tue 04 Oct, 2005 23:36
Posts: 2866

  Not specified

Post by estocks »

Yes, BMW spend £50M designing your car only to leave out a 50p resistor that would increase the power by 10%.

That resistor will

a) Trick you ECU into changing your air/fuel ratio
b) Cause the engine to run rich
c) Increase fuel consumption
d) Foul the spark plugs, leading to early failure and replacement
e) Foul up the cat, leading to early failure and replacement
Image
Use the Search button before posting newbie questions about hard tops and fitting kits, footwell speaker amps, water in the boot, hood maintainance and those horrific angel eyes. We get like 10 threads a week on the same subject, it's obvious that you haven't searched.
estocks
Joined: Tue 04 Oct, 2005 23:36
Posts: 2866

  Not specified

Post by estocks »

msassoon wrote:The first one is really odd. You get power gains by adding a strain on the battery? Not sure how that is going to work! It is not even in the main battery circuit, so what is it doing to the power going into the car? It is sapping off some of the peaks to make them more even possibly.
Indeed it does.
Image
0.5V of ripple does not make a difference.
Image
Use the Search button before posting newbie questions about hard tops and fitting kits, footwell speaker amps, water in the boot, hood maintainance and those horrific angel eyes. We get like 10 threads a week on the same subject, it's obvious that you haven't searched.
User avatar
OXO
Joined: Wed 31 Mar, 2010 08:32
Posts: 567

  Z3 roadster 2.2i
Location: France

Post by OXO »

Look at it this way..

If it made any difference at all, they would be using it on F1 engines, because even 1% would be a big improvement.

They don't.

In fact there isn't even a battery on an F1 engine. Everything runs from the generator.
siwilson
Joined: Fri 19 Jun, 2009 09:54
Posts: 790

  M roadster S54
Location: Horley

Post by siwilson »

Snake oil, don't do it.
User avatar
Daz2626
Joined: Fri 23 Oct, 2009 15:59
Posts: 200

  Z3 roadster 1.9
Location: Halifax

Post by Daz2626 »

According to his feedback, he seems to send the item quickly but nobody has mentioned improvement :?
Image
JASON B&W
Joined: Tue 21 Feb, 2006 20:40
Posts: 25

  BMW other
Location: hounslow
Contact:

Post by JASON B&W »

you are better off get your car remapped by a proper tuning company

than just using a resistor to help add more fuel across the rev range
siwilson
Joined: Fri 19 Jun, 2009 09:54
Posts: 790

  M roadster S54
Location: Horley

Post by siwilson »

JASON B&W wrote:you are better off get your car remapped by a proper tuning company

than just using a resistor to help add more fuel across the rev range
Says the man from the chip tuning company :wink:
Post Reply