Triumph Street Triple 765 RS- First PC V in the country?

[anonymous-user]

Hi all,


I love my 765 RS.

I've only had her a couple of months but I've done a couple of track days at Brands and put 2000 miles of scratching on her.

Triumph have made an exception bike BUT I felt it was just a little down on power for what I was expecting. So a few weeks ago I went to my local dyno and low and behold she was putting out around 115bhp but the AFR was awful. Due to the EURO4 emissions the bike was running very lean (over 14.5) until around 8k then it was coming into normal range.

I have an Arrow US Spec slip on (from Triumph) and thats it so I wasn't expecting her to be that bad.

The hunt was on for a way to sort out the fuelling. Many hours of research and forum posts it's quite apparent that the post '13 triumphs have their ECUs locked and can't be accessed by anyone. That left BAZAZZ but they currently don't make a fuel unit.

Power Commanders weren't really on my radar due to believing my RS had 2 injectors per cylinder like the 675 Daytonas, turns out, it doesn't.

Thats when a call to T3 racing went out, they sourced and mapped my bike with a PC V. Headline figures are 118bhp base and 124.5bhp after map!

Whats more the fuelling is mega crisp with no hesitation at all (it was good to start with but now phenomenal) and I've gained 5 bhp across the range but at 10k I've got 15bhp.

I've put my ramblings on a vlog including- dyno print off, dyno results and my opinions on the feeling of the bike.

Let me know what you think. Cheers

https://youtu.be/d4fUcD4UWTk

[f1nn]

In the vid you mention 143bhp at the crank.

It seems a lot, but I suppose it's over 3/4 of a litre and 750 GSXR's have been around or above that number for years, so maybe not.

Enjoy, I bet it makes a for a great bike, the reviews certainly say so.

[anonymous-user]

With 12-15% transmission losses 140-143bhp is about right.

I was surprised as well. Triumph seem to have done a 'Porsche' and stated a lower figure crank figure than it really is.

[Loyly]

It's disappointing that the fuelling is so stunted on the standard map, since the fkers have locked the ECU.

[2ndclasscitizen]

If you really want to Power Commanders can do 2 injectors per cylinder, just need to buy the SFM: http://www.powercommander.com/powercommander/produ...

[cmaguire]

Loyly said:

It's disappointing that the fuelling is so stunted on the standard map, since the fkers have locked the ECU.

Usually with car ECUs a mapper would 'lock' the fuel/ignition map to protect his work. Although another mapper cannot view or adjust the locked map, they can overwrite it.
If the Triumph ECU allows this then it won't be a major hurdle for a professional mapper, provided they have a base map to load first. Without a base map it would be very time consuming and probably not cost effective for road use.

[WaferThinHam]

cmaguire said:

Loyly said:

It's disappointing that the fuelling is so stunted on the standard map, since the fkers have locked the ECU.

Usually with car ECUs a mapper would 'lock' the fuel/ignition map to protect his work. Although another mapper cannot view or adjust the locked map, they can overwrite it.
If the Triumph ECU allows this then it won't be a major hurdle for a professional mapper, provided they have a base map to load first. Without a base map it would be very time consuming and probably not cost effective for road use.

Usually with motorcycle ECUs you cannot get into them and adjust the maps from the factory. Hence you have to go down the secondary fuelling module route (PCV, Bazzaz etc.). Or flash the ECU completely.

Triumph left a handful of their maps open back in the day, about 10 years ago, but not heard of it being a thing since then.

Also what's a "US Spec" Arrow exhaust??? Arrow are Italian, so I assume this is just a normal race pipe?

[cmaguire]

The 675 was perfectly mappable, I waited whilst a friend's bike was done on the dyno 2 years back.

Yoshimura have a USA division and produce their own parts, wasn't aware Arrow did.

[WaferThinHam]

cmaguire said:

The 675 was perfectly mappable, I waited whilst a friend's bike was done on the dyno 2 years back.

Yoshimura have a USA division and produce their own parts, wasn't aware Arrow did.

Just plug in to the ECU and write directly to it? Mint. I thought the EU put paid to those shenanigans years ago. I'd only heard of it on the old Sagem ECUs that Triumph used to use.

[anonymous-user]

WaferThinHam said:

Usually with motorcycle ECUs you cannot get into them and adjust the maps from the factory. Hence you have to go down the secondary fuelling module route (PCV, Bazzaz etc.). Or flash the ECU completely.

Triumph left a handful of their maps open back in the day, about 10 years ago, but not heard of it being a thing since then.

Also what's a "US Spec" Arrow exhaust??? Arrow are Italian, so I assume this is just a normal race pipe?

With the new EURO 4 exhausts you don't have the option of removal baffles. So the EU version of the Arrow slip on has a welded in baffle where as the US version has a removable baffle.

So yes, Arrow are Italian but I have the US spec exhaust so I can take the baffle out.

[WaferThinHam]

Mr_gangrel said:

With the new EURO 4 exhausts you don't have the option of removal baffles. So the EU version of the Arrow slip on has a welded in baffle where as the US version has a removable baffle.

So yes, Arrow are Italian but I have the US spec exhaust so I can take the baffle out.

I see, so Arrow don't offer a normal race slip on for the 765 in the EU? You have to buy to the 'Merican version?

[anonymous-user]

cmaguire said:

The 675 was perfectly mappable, I waited whilst a friend's bike was done on the dyno 2 years back.

Yoshimura have a USA division and produce their own parts, wasn't aware Arrow did.

Triumph locked their ECUs post '13. So all bikes previous to this are able to have an ECU remap.

Nobody can get into them now so a fuel module for AFR changes is the way to go. People used to use Bazazz a lot due to being able to map 2 injectors per cylinder with one module, instead of buying a separate one with a PC. Currently Bazazz don't manufacture a module for the 765 RS, so PC V is the only route.

Did your friend have one of the earlier Daytonas?

[anonymous-user]

WaferThinHam said:

I see, so Arrow don't offer a normal race slip on for the 765 in the EU? You have to buy to the 'Merican version?

Yep. Even the 'merican one is just as restrictive with a huge collector just without the baffle.

I'm waiting/hoping for an Akra system to be released.

My exhaust is very restrictive as well, thats why in the vlog I say the bike with a better exhaust would be a genuine 130bhp at the rear.

[WaferThinHam]

Mr_gangrel said:

Yep. Even the 'merican one is just as restrictive with a huge collector just without the baffle.

I'm waiting/hoping for an Akra system to be released.

My exhaust is very restrictive as well, thats why in the vlog I say the bike with a better exhaust would be a genuine 130bhp at the rear.

Depressing. You want a Yoshi Alpha T. https://www.youtube.com/watch?v=ya_44BdXCyE (Sorry If I've just cost you more monies). :P

[anonymous-user]

WaferThinHam said:

Depressing. You want a Yoshi Alpha T. https://www.youtube.com/watch?v=ya_44BdXCyE (Sorry If I've just cost you more monies). :P

She sounds beautiful but..I need to be able to get through track day noise and that Yoshi would fail. I have been toying with just going to loud days and getting a better exhaust but I'm undecided.

[cmaguire]

Mr_gangrel said:

Triumph locked their ECUs post '13. So all bikes previous to this are able to have an ECU remap.

Nobody can get into them now so a fuel module for AFR changes is the way to go. People used to use Bazazz a lot due to being able to map 2 injectors per cylinder with one module, instead of buying a separate one with a PC. Currently Bazazz don't manufacture a module for the 765 RS, so PC V is the only route.

Did your friend have one of the earlier Daytonas?

'09 bike

[George29]

f1nn said:

In the vid you mention 143bhp at the crank.

It seems a lot, but I suppose it's over 3/4 of a litre and 750 GSXR's have been around or above that number for years, so maybe not.

T3's dyno has a bit of a reputation for reading higher than others from what I gather

[Tango13]

George29 said:

f1nn said:

In the vid you mention 143bhp at the crank.

It seems a lot, but I suppose it's over 3/4 of a litre and 750 GSXR's have been around or above that number for years, so maybe not.

T3's dyno has a bit of a reputation for reading higher than others from what I gather

On their website they claim they can get a 1050 Speed Triple up to 160bhp.

That would be a very generous crankshaft figure to put it politely...

[anonymous-user]

George29 said:

T3's dyno has a bit of a reputation for reading higher than others from what I gather

Yep, they have had another motherboard recently which has had a positive effect. Their figures are down across the board from what they used to get.

The mechanics told me that their dyno now reads very close to the official BSB dyno.

I'm going to get another run at my local dyno which I will use as the standard to see the relative power gain due to going there before I went to T3. Obviously, it won't be 100% accurate comparison due to different atmospherics etc but if I see similar gains respective to the dyno I'll be happy.

[WaferThinHam]

Mr_gangrel said:

She sounds beautiful but..I need to be able to get through track day noise and that Yoshi would fail. I have been toying with just going to loud days and getting a better exhaust but I'm undecided.

you're quite right, it is pretty loud, but what a sound!