Menu toggle

S2 Chips

Chaps,

Hmmm. Food for thought.

Trouble is that I want to sample the difference a chap makes before commiting to buying one. Hence, a copy would help this. (Or just ask to borrow the chip, perhaps.) Either way, they are a faff to get in and out, and hence a risk of shorting and therefore ruining the chip.

Dropping Richard a line is a fine bit of advice. Thanks. I'll do just that.


Oli.
 
Yes, that's where I'm coming from. I don't mind paying for it but I'd want to feel for myself if it was worth the bother.

Oli - you won't damage an eprom by handling it, they're pretty robust. Even if you put it in arse about face it just wouldn't work, but it would when you corrected it.
 
Ian,

The "Try before you buy" phenonomenonnnommnoonomonomono (can't spell today.)

I was more worried about static discharges when handling the chip. Nylon Fleece/Clumsy opening of the ECU box/Small Spark/ruined chip.


Oli.
 
True, but eproms (even CMOS ones) are pretty resiliant to that. I used to work on PLC systems that had banks of 27c256 eproms and I never broke any. That included dropping them on the floor, dropping one in a cup of coffee and fitting a whole bank of 32 devices all back-to-front. I managed to fry a ceramic cpu once though - it de-lidded itself...[8|]
 
Ceramic CPU de-lidding itself? Sounds like a motorcycle helmet after a nasty accident ... (and to think I was grumbling about this thread getting off-topic. Watch it, you'll get Fen back on his cheese again!)


Oli.
 
Well we are talking about chips... Was an early RISC chip that has a ceramic package with the gold lid. I fitted the wrong one and it got hot enough to melt the eutectic bonds and it kind of blew itself to pieces. It was fortunate really as the absence of the lid covered up my mistake perfectly. I was the only person who knew I had fitted the wrong processor when I spied the correct one still sitting forlornly in my toolbox.
 
Mine is an S2 as well. (Chipped)



ORIGINAL: zcacogp

OK, from the list on the other forum there are going to be the following S2's there:

7)       Graeme Burnett             944S2 cab
12)   Mike Holmes                 944S2
21)   Neil Haughey                 944S2/Saab
23)   Mark Knight                   944S2

Without going back and reading all their specs, I wonder how many of them have chips?

Also, if (as Fen says - thanks) there are two ECU numbers for S2's (are they interchangable?) then we'd need to find what our ECU numbers are and ensure that the chip we ... ahem, reverse engineer ... comes from a similarly-numbered car.

Although, does this matter? If you buy a chip, do they need to know your ECU number to match it up to? (The listing above from BlitzChip says of the S2 chip "ECU NUMBER 0 261 200 195" What if you have a different ECU number?


Oli.
Click to expand...
 
I fitted one of Richard's S2 blitz chips to our S2 when we had it.

No noticable difference below 3.5k, but smoothed the delivery above it and definately pulled a smidge harder at the top end. I thought it well worth the money.

Fitting relatively easy, but there is a knack to separating the PCBs within the ECU which isn't fantastically described in the instructions [&:]
 
Oli
My S2 was chipped at the same time as having New Cams, Cam belt (wheels and pulleys inc) and a full service. And the difference was quite substantial it just felt so much more alive through the revs, I was happy with the performance when i first drove it but the difference after some TLC was amazing. How much of this was just down to the chip I dont know. Darren at RPM Porsche asked me wether I would be interested in the rolling road as He says that my S2 feels quicker than other ones they've experienced.So it will be interesting to see.
Regards
Andy
 
As long as you take the precaution of earthing yourself and not rubbing around on a nylon carpet beforehand you should be fine. I've forgotten the number of times that I'd had my Turbo ECU apart to swap chips in and out with no problems. Also remember that Darren Flamingeye swapped his S2 chips at the side of the road at Jamsport for a before and after Dyno comparison
 
Helpful comments all, thanks. I am warming to the idea of a chip after all - and I was pretty set against them in the first place.

Darren Flamingeye's S2 was the first one I went to see when I was trying to buy one. Another Baltic/Linen, but with sports seats and full leather. It was for sale on eBay, and I went to see it and liked it, but didn't know enough to bid without having a full inspection of the car. Between one thing and another we couldn't schedule an inspection before the auction was due to complete, so I didn't proceed.

A shame, as in retrospect it was probably a very good car. (And a nice bloke to boot.)

There - that's a bit of history!


Oli.
 
ORIGINAL: andymorris

Oli
My S2 was chipped at the same time as having New Cams, Cam belt (wheels and pulleys inc) and a full service. And the difference was quite substantial it just felt so much more alive through the revs, I was happy with the performance when i first drove it but the difference after some TLC was amazing. How much of this was just down to the chip I dont know. Darren at RPM Porsche asked me wether I would be interested in the rolling road as He says that my S2 feels quicker than other ones they've experienced.So it will be interesting to see.
Click to expand...
Andy,

Thanks.

When you say "new cams", is this a swap of standard-for-standard, or did you go for performance items?


Oli.
 
I've just had a quick look at my ECU and as suspected it is standard. The numbers on the unopened ECU box are 94461812402 and 0261200195 which I believe are correct for a 1990 S2.

I'm prepared do a back to back comparison with an after-market chip if someone can provide one on the 6th.
 
Oli - Cams were standard replacements - I did consider high lift but I beleive they would have taken mid range power away and increased power in the higher revs. Defeating exactly what I wanted to achieve with the chip.
Andy
 
I have 2 ECUs one of which has an upgrade chip fitted, I am happy to have my car run with both fitted for a back to back comparison (If time can be allocated) on the 9th October
 
Andy,

Thanks. So the change ofcamsshouldn't have made that much difference - if any - presuming that the cam timing wasn't out?

Graeme,

That's an interesting offer. What do you notice as being the difference between running the car with the chip and without the chip?

Mark,

I'll be looking at the numbers on my ECU when I find the time ...


Oli.


 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Archant Dialogue
Back
Top