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VE Exhaust issue

V8s and beer

Everything else is trivia
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Hello all,
New member looking for help.
I picked up a new MY09 VE Wagon in March. Within days I had put it in for a 2.5" Cat back exhaust. Sounded great with very little drone, that is until the Active Fuel Management kicks in. Then it fills the cabin with the most horrid hammering type of drone. I have taken it back several times and had the rear cans changed with no difference. I then put the original mufflers back on, but kept the 2.5" system. The drone was gone, but so was the performance and V8 note I wanted. In desperation, I have now installed full tuned length headers, High flow cats and the 2.5 inch pipes etc. It has made a huge difference to the performance, but the horrible noise when the AFM activates (I would describe as like sitting inside a base drum) is unbearable. It is so bad that items in the glove box and console rattle.

Has anyone else had this issue? If so, any advice to assist?
 

Reaper

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funny that - the stock system works and goes to **** when you **** with it. I think you are going to be pushing **** up hill for a while on that till the aftermarket guys figure out a workaround for the huge differences in resonance with afm.

Reaper
 

V8s and beer

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Hey Reaper,
Yes, worked fine, but sounded like my Old mans Toyota Crown.
 

BOY1236

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I dunno if it works, but why not change the cans to the Varix mufflers ?

you will be able to open and close them as you want :)
 

Silver Streak

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It appears to be common on the VE s I put a [email protected] 2-5 SS cat back and it does the same drones pretty bad I have done just over 2000 ks on the exhaust and I think that it is getting worse , the power increase is worth the drone, by golly it certainly opens it up and makes go even harder than with the standard system , I suppose seeing that the spare tyre sits in a plastic echo chamber , they reckon that is where the drone comes from , the supplier did state wait until the exhaust carbons up
 

V8s and beer

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Thanks guys,
Yes, I had considered having the AFM disabled. I will probably do that when I have the MAF tune done. Not sure if the Corsa gear is here in Oz yet.
 

monaro327

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just go and have a tune done. mafless tune with otr will give better fuel econ then afm anyway.
 
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