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Ditiching the xforce, keeping my hi flow cats and pacemaker extractors.
After a bit of a search for Drone Free, EPA approved alternatives, I found this
http://www.chevsperformance.com.au/ve-hm-exhaust Tunehouse here in sydney supply them also.
Walkinshaw also said to be drone free?
Discovered my Xforce 2.5 also has baffles removed, adding to the audio assault... sounds grat in full song, but not great for an every day commuter, and illegal.
Get in touch with Luis at APS. Their HM stuff is even complied.
iPhone 4
Hi,Quote:
Originally Posted by Doco
I have a HM catback 2.5inch, hsv headers and cats. Drone free? almost, still some slight drone but very bearable. I also find that it can be a little hollow in sounds done low, not as angry as other exhausts, maybe has something to do with their rear muffler set up.
Walkinshaw use the exact same exhaust, I believe they us HM but just rebadged and more expensive. HM's is legal, sounds pretty good, I wouldn't say its the best but if you use your car like me which is every single day for work and personal use its does the job.
Like with many exhausts it can tend to vary from car to car and also depends on the user's definition of drone. I have seen many on here complain about sometimes quite bad drone on HM/Walky VE exhaust systems, but that was a while ago now so hopefully they've improved since then.
Cheers guys, I think Tunehouse use a different muffler, but not sure
hm do make walkinshaw;s exhausts, BUT it is a little different to the "HM" badged stuff, i went thru there factory earlier this yr and they showed me a couple of the differences, slightly different mufllers and so on.
I have a HM bimodal system i puchased off APS and i absalutely love it. it has no drone what so ever, except a very quick "boom" for a spit second while the valve opens. when the valve is shut you wouldnt even know it has had the exhaust change and when open it is a nice deep note
Well, I "almost" have a HM Headers 2.5" Cat Back system... HM125WU to be exact... A 2.5" painted stainless sytem...
Almost being that they "apparently" haven't supplied any for Series II utes yet (Go figure)... So when the system rocked up the mid section bolted up beautifully, but the rear muffler mounts are different! That's just my luck! So the system has the HM headers mid, and stock rears, for now!
They've got a set ready to jig, so hopefully they'll send them this week...
So far, just the mid section has opened the note up a little bit, and without any drone!! Being an AFM auto, I was so hesitant about any system, but did the research and spoke to "Walkinshaw", and then HM to clarify what was what, and what the end result would be like! Personally, when I described my "ideal" note, it was "AMG C63 loaded up!"... Nice a quite, but turned heads to hear that sophisticated sound when pulling away... So far, with the mid section I reckon I won't be too far off that when the rears arrive... The system is a direct bolt-up, so at least I can play around with the HM and Stock rear/mids to achive the note (and no drone) that I want...
Cool, Tunehouse are fitting it on Saturday, also to a series II so I guess they have their own modified version.
They describe the sound as "drone free" and "crisp euro" so will wait and see.
Quote:
Originally Posted by Huthy77
Cheers Wonky.
I'm guessing sedans and utes have different drone tolerances also?
Quote:
Originally Posted by Wonky
My VE manual ute has pacies ballistic cats and the HM 2.5 catback
It has no drone all the noise comes out the tailpipes
I have been complimented on the sound
It took 3 hours to get the catback to fit the headers though.
I did a lot of research before I did this exhaust
I also have a DUS OTR and make 280rwkw on petrol 290 on LPG
Stu
A Walkinshaw Catback on my E1 with stock headers and cats.
http://i306.photobucket.com/albums/n...VEClubbyR8.jpg
What drone?
Personally I think it’s too quiet and wouldn’t have another.
.
Hey there i think if u after the exhaust sounding most similar to the c63 amg i reckon the walkinshaw is the closest sounding system out there. I have linked two vids for comparison, i think the walkinshaw has a similar bark/crack noise as the stock c63 when reving, unique sound.
c63 (fast foward 2.23)
http://www.youtube.com/watch?v=85GM3q3Xlkk
walkinshaw (fast forward to 0.27 sec)
http://www.youtube.com/watch?v=Jnw4nXmlnmU
I think your delusional if you think you can make it sound like the 6.2 Merc.
iPhone 4
I have a HM 2.5 up to HSV Headers and cats on my SSV manual sedan. There is no drone at all. As others have said, it is a little quiet especially at idle but opens up when the throttle gets mashed. Great crackle on over run too. Made good power with the tune too. I would reccommend for sure.
If you want it to soumd like the merc keep your standard quiet system get a PA system and play the soundtrack.
Stu