Jon's New V70R

[jellison]

I have google the heck out of all systems and the only time IPD came back as droning, was via a Swedespeed thread (I think), where he said later in the thread he realised had something misaligned and once sorted out drone gone. That is not to say they are not a good bit louder than std - see below thread (theblackbox and comment with update). Also I have heard that having any catback AND the downpipe the drone will be more. Out of the two the downpipe will always be the thing likely to give drone. I can see the logic in that.

Have a read of http://forums.swedespeed.com/showthr...st-Drone-noise and http://forums.swedespeed.com/showthr...0R-V70R-models

Actually the first is not about IPD. But the second is and has the IPD people on there too.

[Quote Originally Posted by theblackbox View Post

i installed this about a month and will first say the fit and build quality was extremely well done and it installed in about 45 min. however I have been experiencing in my opinion an above average amount of drone (i really am only concerned with what you can hear in the cabin not from the outside) when i am under 3000/3200 rpms. i was wondering if anyone else has had this issue. it is just much louder than i felt the video IPD put out as well as other videos ive heard of the exhaust. it would maybe not be as bad if it was a higher pitch but it has a low loud drone. I guess it is maybe not the volume as much as the tone anyone have any comparisons to other exhaust systems as far as sound/performance?]

well an update...

i found the flange between the downpipe and exhaust was not all the way tight (hence my excessive drone) and i am extremely happy with it. Like i said it fit together perfectly and I'm now in love with it! IPD makes a great product and I'm not an IPD or bust fan but i am very happy with this purchase!
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I am likely to just shim the block, get a good quality catback (maybe IPD, just cos no one else seems to have on over hear, cost of import and maybe the above issue being then expanded apon from Chinese wispers), I like being different, then we can either put any issues over IPD catback to bed or say Jon's has that and it is awful!

Chatted to Don at Kalmar Union too (to get Tims no.). He laid it out for me that a std V70R / S60R does make pretty much what Volvo said on the tin, 295bhp. And that a good remap (std bar that), should get to ~335bhp, then a good catback and downpipe to 360 (maybe a tad more 370 max I'm guessing but did not say exactly). Sound like half that difference is the catback and half the downpipe. IPD say the catback is good for about 15bhp extra on std car, so down pipe adding 10-20more.

So from that I think I should be aiming at 345-350 with Map and IPD Catback. That will be enough for me (50-55 up on std), which sounds about right from doing similar to my old T5.

This agrees with what the mapper I have previously used says on his site http://www.southwestincartech.co.uk/.../volvo_v70.htm So ad about 15 to that for the (big bore) catback and should give 350 (55 over std). A nice 18.6% gain in power, will feel like a lot more (as it is the amout of power / torque "under the curve" is what you feel.

May take till early next year now to get done as the shimming has added an unexpected amount.

Rear Brembo's now on with new handbrake shoes and the old style adjusters - tick.

Trackday on Friday (not in the Volvo!) at Combe so that should give it a good run out / check over.