To Gundo hack or not?

[JCKST1]

I have a 997.1 Carrera S, love the car overall.

One idea I have been considering for the last couple of months is the gundo hack. The car sounds fantastic at the higher end of the rev range but I feel it lacks a bit below that.

What are people views on here, are you glad you got it done and what diameter pipe is preferable?


Cheers

[YoungMD]

This is a very subjective thing but I have on from style dynamics in Hayes.

Not too loud at all on motorway, I only notice it being very loud on initial start-up and at higher revs with window down, but I think it's great and actually sounds better than my friends pse.

[YoungMD]

This is a very subjective thing but I have on from style dynamics in Hayes.

Not too loud at all on motorway, I only notice it being very loud on initial start-up and at higher revs with window down, but I think it's great and actually sounds better than my friends pse.

[JCKST1]

Thanks. I think I might go for it, my car is back from the garage on Tuesday so hopefully I can get it sorted after that.

If you dont mind me asking how much did it cost, just so I have a ball park figure when ringing local companies.

[ishay]

My understanding is £200 off the car or £300 inc removal is typical.

[YoungMD]

ishay said:

My understanding is £200 off the car or £300 inc removal is typical.

That's what I paid.

[Gallicbred]

Definitely recommend it. Paid around £300 I recall and makes it sound much more like a PSE equipped car. A little noisier at start up to standard then pretty quiet up to 2500-3000 rpm at which point it comes to life - you will be hunting out tunnels and bridges

[chris_w]

JCKST1 said:

One idea I have been considering for the last couple of months is the gundo hack. The car sounds fantastic at the higher end of the rev range but I feel it lacks a bit below that.

What are people views on here, are you glad you got it done and what diameter pipe is preferable?

Had Hayward and Scott do this on my 996 C2. Would recommend it but couple of considerations; 1) what's the condition of your back boxes - are they worth modding (mine were splitting at the seams so picked up a better set off eBay and had those modded instead), 2) how loud do you want to go - I did a fair bit of forum trawling on the pipe diameter and settled on a very conservative 1". Makes a difference but not by a huge amount, would go 1 1/4" if doing it again, I think most go with 1 1/2" if not more but mine is a daily driver.

[JCKST1]

Thanks guys. I will get it booked in soon, going to go for a 2" pipe. Seems to be common on the 997's?

[jonno_]

Makes it sound like it should from the factory imo.
Easy enough to sell and replace with something switchable if you need more peace.