Macca

Paul if it's a 1995 and NZ new it's likely without cats. Look in the handbook - if option code M150 then it's without cats....

Pel

Went and looked at that 996TT last week, the vendor is selling on behalf and doesn't appear to have knowledge about the car or Porsche. The owner hasn't given him any service history either.

kiwi 911

OK - will check. I only thought early production cars like yours were non-cat cars - but will check?? (when I get it back one day........)

shiraz

Paul, mine is also '95. M150

kiwi 911

993 and 964 owners - check this site out..........

Shame we are not in France as it looks like they get up to some cool stuff.

http://www.club93-64.fr/

kiwi 911

I should have got Doug to video your car at idle and a drive by........

From memory you have Cargraphic exhaust and RSR silencers??

I am keen to hear your car........... (and see it)

peterC2S

Nice - great cars and looks like they have the social : driving ratio spot on.

shiraz

Cargraphic yes, don't know about RSR, wide oval tips. Also, Wong chip & single mass flywheel. I'd like for someone else to drive it to get an independent impression, it is the only 993 I've driven or ridden apart from brief ride in a turbo so I can't compare.
Cheers

CS Mende

Thanks Macca - I'm low maintenance.

A fun little read for everyone's afternoon: http://www.motorpunk.co.uk/articles/porsche-fallacy-family-tree/

996tnz

The X50 gives more power but also more lag so wouldn't be my first choice for NZ road and track. You are right about stock intercooler heat soak sapping sustained power, especially on flashed Turbos, but there are upgrade options - leaving only static (eg pre-launch) heat soak as a temporary power dip. Also addressable if anyone cares enough.

You're on the money too with your warning about real world performance varying from dyno fueled expectations, which is why those 60-130mph or 0-300kph are much truer performance indicators.

When I last checked a year or two ago, the letter of the law here in NZ stated that a 'rechip' requires an LVV cert. A reflash however is a tune applied to the original chip, rather than a rechip (replacement hardware chip) and was fine last I checked - provided that the original turbos and wastegates are not modified and provided that the power increase is no more than 20 percent. As always, some technicians may interpret the rules to be broader than they are, but that's how it read.

A PIWIS/Durametric fault code scan after a spirited drive might be informative, and a qualified PPI might be able to pick up whether the 80,000 km service has been done. CarJam and PPSR check sound the go too.

If I couldn't get any service history I'd have a major service done (+ get the coolant pipes pinned) soon after purchase.

mjg

Yeah, the X50 kit is a bit of a trade off depending on your upgrade plans. At least you get the better GT2 intercoolers with it, though.

No difference between a flash and replacing the chip. Here's the official word: http://lvvta.proboards.com/thread/35...ng-re-chipping. The 20% power thing doesn't apply to ECU modifications of turbo vehicles, any change exceeds the LVV threshold.

996tnz

The 996 GT2/997.1 ICs are better, but only by about 5% (same cross sectional area but the fins extend out a bit more ie they trade off some extra lag for a little extra cooling by filling most of the bypass channel that helps reduce lag on the K16 version). 997.2 ICs are noticeably better though - about 15 to 20% more efficient.

Thanks Matt, that's useful info and will help people with risk analysis but I see an individual's board posting as falling into my 'technicians' interpretations may vary' bucket. The quote from the guide itself has the 'rechip' wording I mentioned, and it is only natural justice that we be entitled to rely on the wording of official documents rather than be bound by any later individual broader interpretations. I see he does work for the LVVTA though.

Everyone will make their own call

kiwi 911

Macca - you are correct - I have no cats??

Option sticker has 150, not M150, but assume this is the same thing??

Spokes

Paul, a small myth buster, my 993 is 1996 VRAM and has a M150 option. Macca and I swapped a couple of PMs on this earlier in the week and we were both surprised.

I was trying figure out a couple issues with my fabspeed kit arriving soon whether I needed O2 sensors etc. Turns out I have the M150, no O2 sensors, no cat, and a potentiometer.

S

Macca

Correct Paul. That's M150 option. Congrats :-)