Anyone using a HM Headers Exhaust? or Walkinshaw?

[Doco]

I hope more workshops follow your lead.

This is great, but I'm assuming it still doesn't indemnify you against defects, or insurance assessors, as an engineers certificate has to has to be registered with the vehicle and lodged with the RTA (may be different in Vic?)

Doco - NP

We have a certificate which shows that the exhaust system & setup we developed with HM Headers for our emissions approved car passes all necessary ADR requirements.

For the record , this system is not the same as the other HM bimodal system we sell

[MRGILL]

evryshop say their system is drone free but it depends on the whole system. i mean size of the catback, header style and tuning. so its just a matter of having right combination. there is big difference between auto and manual.

[Kotso]

Ok, so i have kinda answered my own question here regarding the factory bimodal on e3 gts being fully open all the time.

Walkinshaw used to be able to have the EDI reprogrammed to have it open all the time (if ive understood what they said correctly. I believe HSV put a stop to them doing so, so i called Walki and we had a chat.
Whilst the aftermarket APS allows for variable control the Walki EDI fix didnt, but it retains the origal aspect of the car.

What they are going to try and do is a simple bypass switch in the glove box which sends a signal down to the valves to stay open regardless of what the edi is doing.This will allow me to switch it on (i.e. have it fully open) or switch it off (i.e. let the EDI program decided what to do based on which setting you have selected).

I have just dropped it off to them today, so ill let you all know how it goes.

[Atomic maloo]

Hi I run a 3 inch Walky exhaust no drone at all and sounds great definatly recommend it

[Kotso]

Ok, so i have kinda answered my own question here regarding the factory bimodal on e3 gts being fully open all the time.

Walkinshaw used to be able to have the EDI reprogrammed to have it open all the time (if ive understood what they said correctly. I believe HSV put a stop to them doing so, so i called Walki and we had a chat.
Whilst the aftermarket APS allows for variable control the Walki EDI fix didnt, but it retains the origal aspect of the car.

What they are going to try and do is a simple bypass switch in the glove box which sends a signal down to the valves to stay open regardless of what the edi is doing.This will allow me to switch it on (i.e. have it fully open) or switch it off (i.e. let the EDI program decided what to do based on which setting you have selected).

I have just dropped it off to them today, so ill let you all know how it goes.

Sweet...Got the car back and im happy with the results. Whilst it has a slight drone now (with stock exhaust but EDI fully opened) it has that beautiful V8 rumble throughout the full rev range under any acceleration, as well as that rumble and slight spitting sound in the 2-4K RPM range.

Awesome job, Thanks to Walkinshaw Clayton for the fix.

Love It

[jaykay]

Can you provide more details on what was done please...

[Kotso]

Can you provide more details on what was done please...

Ok, so a simple toggle switch was put in the glove box.

Length of wire run under the carpet all the way to the rear muffler (so as to not have exposed wiring)

Essentially thats it. Sends a small current to the soleniod controlling the valve to keep it open.

Since the EDI is programe based, Walki just put in a hard switch with two options....Fully open (on all the time) or Fully closed (let EDI work it out based on the mode selected)

Anything more detailed you will have to call them (03 9265 9700) .