upgrading chip on 996
Discussion
Just a thought.. (please forgive my ignorance I am brand new to 996 ownership) but does a 996 (3.4) actually need cats to get past the emissions regs? My previous 3 cars didn't. They all gained significant performance from removing them - not really surprising when you think what they do to the airflow.
Is a decat a recognised way forward or is it frowned upon? Do you need to remap to realise the gains from the improved airflow? can you do anything about improving the intake - change the airfilter/airbox?
The truth is, I really miss the noise and flames I used to get from the exhaust!
Cheers.
Is a decat a recognised way forward or is it frowned upon? Do you need to remap to realise the gains from the improved airflow? can you do anything about improving the intake - change the airfilter/airbox?
The truth is, I really miss the noise and flames I used to get from the exhaust!
Cheers.
Legal requirement to have cats on a car registered after aug/1992 I beleive..Some of the tuning specialists fit 100 or 200 cell cats to 996 to improve flow.For the cost of these i don't get the impression it is economical for the negligble gains.
The best thing with a 3.4 996 is to save up and get a sublime 3.6 or even a TT
The best thing with a 3.4 996 is to save up and get a sublime 3.6 or even a TT
Infuriatingly slow!..maybe it needs a servive?,,i had a facelift 2002 3.6 C2,,,when out with a friend in his TT there was very little in it up to 100 and was seriously down to who put their put down first.
Only above 100-110 would the TT take off and go.
all done on a private test facility of course!
I genuinely thought the facelift was fast,,,i have dwapped drives with a mate who has a facelift C4,,,although no doubt as fast the compensation to the braking accelerating pitch did make the c4 appear to be the slower car.
Only above 100-110 would the TT take off and go.
all done on a private test facility of course!
I genuinely thought the facelift was fast,,,i have dwapped drives with a mate who has a facelift C4,,,although no doubt as fast the compensation to the braking accelerating pitch did make the c4 appear to be the slower car.
I don't understand how a vanilla 996 could keep up with TT - surely they have about 33% more power (300 plays 400bhp).. and weigh the same?
The comment on slow was a little jibe at Porsche owners.. previous car was a Cerby 4.5 which would leave the 996 for dead (as long as it didn't breakdown). Problem is, i also have track car which will leave it for dead so i keep inadvertently reminding myself that there is another performance league up there, if you see what I mean? I meant no harm.
The comment on slow was a little jibe at Porsche owners.. previous car was a Cerby 4.5 which would leave the 996 for dead (as long as it didn't breakdown). Problem is, i also have track car which will leave it for dead so i keep inadvertently reminding myself that there is another performance league up there, if you see what I mean? I meant no harm.
They don't weigh the same TT is about 150-180kg heavier,depending on the spec..the standard Turbo is 100 bhp better off.
The 0-100 times are less than 1 second apart,look in Autocar....i wasn't joking when i said about who puts your foot down first,
The TT is undeniably the quicker car,but there is still a small ammount of lag despite being one of the best turbo installations on the planet.
Once the Turbos are lit and you are past 100mph the difference is more noticeable.Myself and partcularly my turbo owning mate were amazed.
The 0-100 times are less than 1 second apart,look in Autocar....i wasn't joking when i said about who puts your foot down first,
The TT is undeniably the quicker car,but there is still a small ammount of lag despite being one of the best turbo installations on the planet.
Once the Turbos are lit and you are past 100mph the difference is more noticeable.Myself and partcularly my turbo owning mate were amazed.
buster said:
Charlie why are you not seeing one of the many UK tuners? lots of Porsche tuning experience this side of the pond you know....
Who should we be talking to?
Ok lots of people you can try, but my vote for 996 ECU mods would be West tuning of Thruxton, Hants. 01264 773839. 996T (non X50) power up into the 480bhp area.
Also I was at West today for a natter with Ray West about bits on my bimmer & ref my comment on normaly aspirated 996's- well things have moved on a bit since the early days of ECU mods on them and now with different technology available reasonable gains- (in the 20 ish bhp area) are achiveable on the N/A engines. (ref X50 996T- sorry I forgot to ask)
I can certainly vouch for the workmanship & quality of Rays work, so if you are after more grunt from ya 996 he would certainly be my first phone call & if you go for it let us know how you got on.
I think with the GIAC ECU remap for a 996 TT, certainly from Imagine Auto, you can opt to have a switch, which enables you to change back to stock settings, in the event your car needs to go back into the OPC. Seem to recall seeing a picture of a 996tt which had a remote fob with 6 buttons, valet (30 mph max), stock, and a button each for stages 1 - 4. (echoes of "go baby go"!)
With this ability it is apparently impossible for the OBD to pick up any changes when in stock mode.
Charlie360, interested to hear your experiences / impressions after your remap, so please keep us posted.
With this ability it is apparently impossible for the OBD to pick up any changes when in stock mode.
Charlie360, interested to hear your experiences / impressions after your remap, so please keep us posted.
If you're thinking about a sports exhaust for a 996tt, came across this comparison test published by Imagine in the US:
[url]www.rennlist.com/imagineauto/[/url]
I am drawn towards the Fabspeed version and got a quote of US$ 3100 shipped to the UK.
[url]www.rennlist.com/imagineauto/[/url]
I am drawn towards the Fabspeed version and got a quote of US$ 3100 shipped to the UK.
Iguana said:
Ok lots of people you can try, but my vote for 996 ECU mods would be West tuning of Thruxton, Hants. 01264 773839. 996T (non X50) power up into the 480bhp area.
Also I was at West today for a natter with Ray West about bits on my bimmer & ref my comment on normaly aspirated 996's- well things have moved on a bit since the early days of ECU mods on them and now with different technology available reasonable gains- (in the 20 ish bhp area) are achiveable on the N/A engines. (ref X50 996T- sorry I forgot to ask)
I can certainly vouch for the workmanship & quality of Rays work, so if you are after more grunt from ya 996 he would certainly be my first phone call & if you go for it let us know how you got on.
I spoke to Ray at length on the phone and have decided to take the car to him in the next couple of weeks for a bit of a breathing upon! he reckoned 480bhp was ok if a little conservative and that would be around 500 with a free flowing exhaust - so I shall have the mods done and report back soon!
Going back to clubsport's earlier comment, I desperately tried to get close to Autocar's figures on the facelift 996 but never managed it. I thought for a while that Autocar had been lent a tweaked car but not told about it by the Porsche press office.
Now I guess it's either my hand/feet co-ordination is just not sharp enough to eke out the last fraction of a second performance, or some cars are just quicker than others out of the factory gates.
Or maybe it's something to do with the way the engine's run in? I was very careful with mine, but I have heard that some manufacturers' cars go quicker but don't last as long if they are thrashed from day 1.
Now I guess it's either my hand/feet co-ordination is just not sharp enough to eke out the last fraction of a second performance, or some cars are just quicker than others out of the factory gates.
Or maybe it's something to do with the way the engine's run in? I was very careful with mine, but I have heard that some manufacturers' cars go quicker but don't last as long if they are thrashed from day 1.
Thanks Kagey. It doesn't seem outrageous for a subjectively crisper throttle response but then your subsequent comment kind of nailed it for me. If I want outright aggressive eyeball peeling speed, I'll go back to a TVR. The 996 is a proper grown ups car. My wife is driving it today and I'm not even slightly worried! Besides, the caterham devastates both of them round a track. All I have to do is figure out a way of getting the caterham (and family) to the Nurburgring!
OK I went ahead and had it done!! I dropped the car in with Ray West on Monday evening and got it back last night, with a power hike to around 480 bhp. Initial impressions are that it's hard to notice much difference in the traffic light grand prix 0-60 type sessions (this could be because we are only probably shaving 10ths of a second off) however in the mid ranges, say from 50mph upwards it's absolutely mad - Ray reckoned that it should be good for 200mph now, I can't confirm this having not had a chance to test it yet, however it does get to the 150-160mph mark a whole load quicker (obviously tested on a private test track you understand!) Generally I feel pretty happy with the mod and think it's money well spent - will comment further when I have had a proper chance to thrash it!
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