2011 Exhausts

[a7abw]

Hi Rigsy,

As I said in another thread, the HP Corse low can has to be the coolest exhaust on the entire planet, but everyone puts them down because of this supposed drop in power.

At last someone on this forum is actually going to fit one of these! I'd be very interested to know how it performs, and even better, if you have access to a dyno, you could also post the numbers.

Appreciate hearing your opinion.

[j3T]

Originally Posted by a7abw

Hi Rigsy,

As I said in another thread, the HP Corse low can has to be the coolest exhaust on the entire planet, but everyone puts them down because of this supposed drop in power.

At last someone on this forum is actually going to fit one of these! I'd be very interested to know how it performs, and even better, if you have access to a dyno, you could also post the numbers.

Appreciate hearing your opinion.

It's not a supposed drop, it's an actual drop. The dyno charts were posted here on the board a while ago.

[Ciges]

Canadian M4 Slip on

[NTek]

Originally Posted by Morbo

I like the look of the Competition Werkes GP for my 2011, but can't find any info on mapping. I emailed CW and they responded that the Arrow 3in1 is close.

Anyone spotted any threads with someone discussing this exhaust on a 2011 'bike?

http://www.triumphrat.net/speed-trip...w-exhaust.html

Dynastyss and myself got a custom tune for our 11s. Huge improvement over the Arrow map that CW recommends (which is noticeably lean down low on the CWs) - though that was the base for the tune. As another poster pointed out the peak HP might be corrected but the curve is great and before/after feel is a lot more responsive. PM Dynastyss if you want more info.

[NTek]

... and my 2¢ - Arrow high mount slip-ons not uncool just too expensive when there are other awesome options that are just as good - Leo Vinces also come to mind in addition to the many already posted in this thread.

But the biggest hit on the low slip ons really have to do with the loss of torque from, as I understand it, not having a matching header so the ratio of volume is off for proper blowback to increase torque. The full arrow low has custom headers which are bigger so the ratio is supposedly proper. (this is as my dealer explained to me though I'm pretty sure he really wanted me to buy the Arrows so feel free to correct my understanding if you feel the need). Some of this can be addressed with a proper tune but supposedly not all. Also related to why the lows backfire more and it's nearly impossible to tune it out...

Cost/benefit I still like the weight loss and looks of the low slip ons and quite frankly can't afford the Arrows and with a good tune the performance is still awesome. But if you can afford the Arrow lowboys yes they are cool. Though visually there are still better looking options - I obviously have a high opinion of the Competition Werks GP...

[djn876]

Also, just got the comp werkes on here and it sounds awesome. In addition, the weight savings on the bike really does make it feel lighter and quicker to turn.

[Rigsy]

hi a7abw, I too think that the HP Corse is super cool and with the standard road baffle in weighs in at 1.6KG which is one of the main reasons I went for it, it comes with a free flow dbk as well which will be the one I will be using.

I have read on here that there is a power drop with this pipe but have not been able to find the evidence for that statement, however if you look at the dyno chart from Hp Corse it shows that with the e marked baffle there is a drop of 2 bhp however change that for the supplied free flow one then you are up by 2 bhp.

You can see why when you look at the standard baffle and this is probably what they needed to do to get the EU approval certification for it.

As far as I am concerned I will be happy to get the standard power output from it as the main benefit for me is the weight saving and shifting the centre of gravity to improve the handling.

That and the fact that it has got to be the best looking low pipe around.

Rigsy

[Ben_]

^Really interested to get further info from you on this; I am on the verge of buying the HP corse low mount but have hesitated due to the negative reviews.

It would have to be an absolute design flaw to create a 10hp/nm loss so wonder if the folks that tested it were doing something wrong.

[Leo Vince]

I actually emailed HP Corse about this. They confirmed with the DBK 35 there was a slight drop and an increase with the DBK 40. Both with a Triumph map.

There's a group buy posted on the exhaust thread if anyone wants to pull the trigger.


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