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  • Member
  • Member For: 19y 3m 27d
  • Location: Perth

Hi all

just got my herrod stealth tuner in the mail and have booked the car into HPF for a custom tune in 2 weeks.

I cant wait :blink::spoton::spoton: so I was going to load the 8psi program and give it a go but dose this need the plugs to be adjusted?

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  myblueprintxr6t said:
Hi all

just got my herrod stealth tuner in the mail and have booked the car into HPF for a custom tune in 2 weeks.

I cant wait  :blink:  :spoton:  :spoton: so I was going to load the 8psi program and give it a go but dose this need the plugs to be adjusted?

Load up the 8psi and give it a go. If the plugs need gapping you will soon know however won't do the car any harm if they breakdown.

Given that you are going to have to re-gap your plugs prior to a custom tune you may as well do it anyways :spoton:

  • Member
  • Member For: 19y 3m 27d
  • Location: Perth

I paid $700 privately for the tuner its new and never been installed before. This was a better option than $950-995 from a business :spoton: .

Can anyone tell me what the T sounds like with the centre muffler removed as HPF has suggested it when the custom tune is done :spoton: .

  myblueprintxr6t said:
I paid $700 privately for the tuner its new and never been installed before. This was a better option than $950-995 from a business  :spoton: .

Can anyone tell me what the T sounds like with the centre muffler removed as HPF has suggested it when the custom tune is done :spoton: .

It sounds throatier without being loud. You will also get a burble when backing off the accelerator. This will accentuated if you go for straight through pipes as opposed to installing a couple of hotdogs. Some have reported that pipes only cause a bit of droning @ cruise.

Why did HPF suggest you remove the centre muffler, was it just for the note?

Given that the stock cat is the restriction I wouldn't of thought removing the centre muffler would make any difference to the flow rate of the exhaust.

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  • Member For: 21y 2m 28d
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  • Location: Melbourne
  jordak said:
  myblueprintxr6t said:
I paid $700 privately for the tuner its new and never been installed before. This was a better option than $950-995 from a business  :spoton: .

Can anyone tell me what the T sounds like with the centre muffler removed as HPF has suggested it when the custom tune is done :spoton: .

It sounds throatier without being loud. You will also get a burble when backing off the accelerator. This will accentuated if you go for straight through pipes as opposed to installing a couple of hotdogs. Some have reported that pipes only cause a bit of droning @ cruise.

Why did HPF suggest you remove the centre muffler, was it just for the note?

Given that the stock cat is the restriction I wouldn't of thought removing the centre muffler would make any difference to the flow rate of the exhaust.

HPF have been advocates of removing the centre muffler for a long time. There are gains to be had by doing it.

  • Member
  • Member For: 20y 3m 20d
  • Gender: Male
  • Location: Melbourne
  myblueprintxr6t said:
I paid $700 privately for the tuner its new and never been installed before. This was a better option than $950-995 from a business  :spoton: .

Can anyone tell me what the T sounds like with the centre muffler removed as HPF has suggested it when the custom tune is done :spoton: .

This is what it sounds like from inside the car.

Im sure it would sound even better with an EDIT..!

centermufflerremovedinside.wmv

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  • Member For: 20y 9m 25d
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  • Location: Perth, WA

Ooh look another centre muffler thread! :spoton:

But seriously... good luck with the tune. What figures are you aiming for?

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