964 Chip on eBay for 60 Quid

[Jappo]

http://cgi.ebay.co.uk/Porsche-964-C2-4-Power-Tunin...

Anyone any experience or advice regarding this chip for a 964 C2/4?

[Jappo]

I'm guessing the answer's no

[graeme36s]

My advice would be to only buy a chip from a reputable specialist. You will be amazed at the difference.

[Silent1]

Bargepole touch don't

it'll be an inline resistor that will plug in to a sensor causing the car to massively over fuel

[Jappo]

Silent1 said:

Bargepole touch don't

it'll be an inline resistor that will plug in to a sensor causing the car to massively over fuel

Thanks for your response. They say it's a chip replacement that lifts the revs by 300rpm and power by 20bhp (probably as a result). If you click on the link you'll see it.

[Jappo]

From the eBay advert: "One of our chips will typically give +20bhp & also raise the rev limit by +300 rpm.

This is not a cheap "piggy back" resistor that tricks your car into dumping more fuel into the engine with outrageous power claims. It upgrades & optimises the Fuel & ignition mapping program in your Engine Control Unit (ECU).

The chip comes with easy to follow photo instructions for fitting or we can arrange fitting for you. There is no soldering the chip just plugs in, replacing your original standard chip & should only take 20 min's to fit."

[nervous]

60 quid resistor for a 20 grand car that may cause a 6 grand bill. hardly seems like a wise investment.

nice things cost money.

[Jappo]

nervous said:

60 quid resistor for a 20 grand car that may cause a 6 grand bill. hardly seems like a wise investment.

nice things cost money.

Still makes me wonder why that's precisely what they say it is not, surely the seller wouldd be hammered if this was a lie.

[Silent1]

Look up engine restore on ebay, the stuff is snake oil but he's got amazing feedback, all because people bang the feedback up as soon as they've got it, great he delivers quick, but 3 months later if the engine goes bang they have no way of showing this to other ebayers

ETA. Comedy engine restore thread http://www.pistonheads.com/gassing/topic.asp?h=0&a...

Edited by Silent1 on Tuesday 11th September 23:08

[supermono]

nervous said:

60 quid resistor for a 20 grand car that may cause a 6 grand bill. hardly seems like a wise investment.

nice things cost money.

I don't have a degree in electrical engineering, but that component shown in the photograph is a silicon chip not a resistor. It, presumably, replaces one in the ECU box and contains different ignition timing and fuelling parameters.

A resistor is easily recognisable as a wire with a striped blob in the middle.

I understand your reservations but clearly this guy isn't selling a resistor. If he happened to buy an off the peg superchips map or something and has an eprom programmer he could maybe run off hundreds of copies for notmuch which may explain the price.

It's still a bit of a risk though, but if the car was put on a dyno before and after, the OP could evaluate the "improvement" with the safety of the CO monitor up the exhaust and dyno operator aborting the test if it looks like she's gonna blow.

SM

[Ultra Violent]

The only real thing you can do to increase bhp on a NA car is increase the ignition timing. Its probably got 3deg added across the entire range...

Ask him to send you a copy of the before and after fuel/ignition maps as you dont like putting unknown things in your car.

If he says its a secret, then tell him anyone can go and buy an eprom reader and just down load the maps anyway. Your just looking for a quick deal if possible, blah blah.

The is a thread (somewhere) on rennlist on the 964 forum where some people got a load of modified chips and downloaded the maps to compare. Some where detonation waiting to happen, other were fine...

[Jappo]

Wouldn't it also be logical to suggest that the 20bhp claimed increase will largely be produced by upping thye rev limiter by 300-400rpm?

[Kibosh]

nervous said:

60 quid resistor for a 20 grand car that may cause a 6 grand bill. hardly seems like a wise investment.

nice things cost money.

I like hookers too.

[Vesuvius 996]

nervous said:

60 quid resistor for a 20 grand car that may cause a 6 grand bill. hardly seems like a wise investment.

nice things cost money.

I agree with the granite one.

What sort of idiot has a lovely 911 like that and then decides to put some schonky chip in it for a few extra HP.

Would you inject yourself with some liquid you bought on ebay from someone you don't know which was advertised as making you run a little bit faster??

Please.

[tjdixon911]

The Chip shown is similar to the one on the 968, I have just replaced mine with a promax chip, alot of people on 968uk use this chip without any problems, it is meant to give 15-20bhp more and ups the rev limit from 6800rpm to 7100rpm. Can't tell you exactly what/how it does it but it did come highly recommended...

They also do the chip for the 964 @ £150, I think they explain how it works on the site and give all the graphs etc...

http://www.promaxmotorsport.com/

[Ultra Violent]

You're not going to get more bhp from just upping the rev limit unless your power curve is still climbing at the old limit.

[nervous]

supermono said:

nervous said:

60 quid resistor for a 20 grand car that may cause a 6 grand bill. hardly seems like a wise investment.

nice things cost money.

I don't have a degree in electrical engineering, but that component shown in the photograph is a silicon chip not a resistor. It, presumably, replaces one in the ECU box and contains different ignition timing and fueling parameters.

A resistor is easily recognisable as a wire with a striped blob in the middle.

I understand your reservations but clearly this guy isn't selling a resistor.

SM

thanks for correcting me. i was of course speaking in generalities. I don't for instance know that his car was 20k either, or that it would result in exactly a 6 grand bill. i would wager that my point stands though.

the Porsche forum: retentiveness matters.

[Ranger 6]

Begs the question - what chip would you use?

Is the Promax one a proven product? I've 'chipped' a N/A car before and never professed to massive power gains, but the main benefit was a much smoother and more 'instant' throttle response.

[Vesuvius 996]

Ranger 6 said:

Begs the question - what chip would you use?

Is the Promax one a proven product? I've 'chipped' a N/A car before and never professed to massive power gains, but the main benefit was a much smoother and more 'instant' throttle response.

Probably due to the weight loss in the wallet department.

[warmfuzzies]

Here we go again.

Rennlisters were given some Promax chips, We, the great unwashed have been waiting for quite a while now for a before and after dyno run.......it's your cash fella......but you have been warned, if it were me, I'd have a rolling road remap for about £500 or so, at least you know what your getting...

Kvin.