New 964 owner - G pipe recommendations?

[simonlodge]

Hi there,

New to this forum and the world of aircooled 911 ownership. I've just got back from RPM Technik where I've put a deposit down on a 964 coupe (non-sunroof with factory LSD). Very excited indeed!

Discussed with Darren from RPM T putting on a G pipe to enhance the sound. Would be really interested to hear any views from people who have done this to their cars?

Also any 964 owners know of a good baby seat (1 year to 4 years) that would fit in the back??

Thanks in advance

[freedman]

G pipe, do it, cheap easy to do and they sound much nicer

Not really any downsides in my experience

[simonlodge]

Thanks - that's what I hoped someone would say!

[ras62]

This link may answer a few common questions http://www.964uk.com/html/FAQs%20-%20Engine.htm

[simonlodge]

Ta - very helpful

[mr pg]

simonlodge said:

Hi there,

New to this forum and the world of aircooled 911 ownership. I've just got back from RPM Technik where I've put a deposit down on a 964 coupe (non-sunroof with factory LSD). Very excited indeed!

Discussed with Darren from RPM T putting on a G pipe to enhance the sound. Would be really interested to hear any views from people who have done this to their cars?

Also any 964 owners know of a good baby seat (1 year to 4 years) that would fit in the back??

Thanks in advance

I'm dropping mar car up there shortly. Is yours at their yard? I'll have a look around when there.
I put a cat bypass on my 964 when I had it. Many go for the cup pipe bypass, rather than G pipe. Either sound fantastic. G pipe easier to fit, cup removes weight from a bit further back, and is claimed to improve performance a bit, whereas G pipe doesn't.

[simonlodge]

Hi mr pg

Yep it should be at RPM T's yard. I put the deposit down yesterday, but won't get it probably until next weekend as they need to fit D90s, the G Pipe and do the major service.

It's the original guards red one (G reg). Take a look inside if you can - it's like a timewarp!

Thanks for the tips on the exhaust, I think I'll stick with Darren's recommendation of the G Pipe for now and see how we go.

Cheers

[Slippydiff]

Not a big fan of the G pipe, as others have said, ditch the cat, remap and chuck a Cup pipe on it ! More responsive, lighter and a exhaust note that sounds wonderful, add it to the superb induction noise(if you drill the airbox . . . )
Enjoy it !

[theturbs]

Congrats on the purchase OP. From experience, I can vouch that the G-pipe is very worthwhile.

Good luck.

[simonlodge]

Thanks for all the advice, nice to know there are people to bounce ideas off. Already feel like I'm going to love having a 964!!

[ras62]

That is a rare 964, there will be very few cars without a sunroof, or a LSD. Get a full geo done once you have done the exhaust mods. FWIW a decat together with a G pipe will most likely mean failing at most tracks for noise measurement.

[mr pg]

I spoke with Ollie when up there earlier. He said it's a great car, and if he had the money would have bought it himself. Apparently the interior is like new, and with a G reg with just 65k on the clock is pretty unusual.

[marky911]

mr pg said:

I'm dropping mar car up there shortly. Is yours at their yard? I'll have a look around when there.
I put a cat bypass on my 964 when I had it. Many go for the cup pipe bypass, rather than G pipe. Either sound fantastic. G pipe easier to fit, cup removes weight from a bit further back, and is claimed to improve performance a bit, whereas G pipe doesn't.

Yep, this. ^^^
The 2 main options are keep the big central rear box and fit the g pipe in place of the final corner box.
Or, fit a cup pipe in place of the big central box and keep the final corner box.

I did the latter, to ditch some weight but then heard a car with the former option.
It was nicer. Mine sounded a bit hollow in comparison.
Both cars were decatted.
So basically, yes keep the main box and get a g pipe on there.
There's also a swan neck pipe now. It's a longer g pipe, supposedly for a more tuned sound, but I've never heard one.
Car sounds great by the way. Be sure to post pics.

Edited by marky911 on Thursday 13th October 20:40

[ChrisW.]

I depends upon whether or not you want to do track days with a 105dB noise maximum at 3/4 max revs.

Cat bypass gains close to 10% in power output ...

A Cup pipe in place of the primary saves a lot of weight from the very back of the car where it most benefits balance. The standard secondary exhaust starts the silencing job and a Wills tip will bring it down to 103 to 104 dB.

If you do reverse the process with bypass, standard primary and G pipe, it will be too load for many track days and with poorer balance ... but it will sound fabulous !

[melv]

freedman said:

G pipe, do it, cheap easy to do and they sound much nicer

Not really any downsides in my experience

Forget trackdays!!

[freedman]

ChrisW. said:

Cat bypass gains close to 10% in power output ...

Seiously, I dont think thats even close to being true, you're suggesting a bypass gives you 25bhp,

Evbenr people like Fabspeed only claim half of that

[porkey]

Cat bypass gains close to 10% in power output ...




No chance.
5 HP at the most. I doubt you'd even notice it.

[mr pg]

I didn't notice any performance improvement when I put my cat bypass on, just a slightly sweeter sound.

[Slippydiff]

I think it would be more accurate to say a cat bypass + remap gives the magical 10% gain (in my experience)

[porkey]

My old 964 C4 made 252HP with a cat bypass and 272 with a re map. Worth doing but hardly night and day difference.