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Discussion Starter #1
Hello Guys
A few days ago I mounted my tambu stainless headers and took it on
my dealers dynojet.(I made shore a few test runs where included in the price..:naughty:)
As you will see the headers are a nice piece off kit,
Beautifull tig welded, perfect fitting form , nice detail also as tambu etched logo's and even the inside off the welds where niceley grinded
down , clearley not a chinese mass product..
The onley dissapointing thing is that there is no powergain what so ever!!
I took the bike for a dyno run a few weeks ago , completly standard
and it had 141-144 (the best and lowest off 3 dyno runs)backweel
horses, wich translate in 160-165 engine horses, very impressive , as the
specs are 158 , so a bit more than was expected.
So yesterday the same run , with the new headers , and 141.75 hp
almost the same as standard (just 2hp down, but this could be the dyno's tolerances or the slightly warmer air temp as it was a hotter day than the firts dyno run), then we where couriuos if the same would apply with the open corse mufflers mounted.
Luckeley the dealer had a set off 2-hand titanium F1 brutale corse
mufflers laying around...
so whe mounted them , and still about the same result... 142.75 hp
What you also can see on the dyno is that the power and torque curve are as smooth as you like, no powerdips what so ever..
All measurements are with the standard ecu ,, but I see no point off chaning it with a power commander , the ideal fuel -air ratio for max power is 13, anything higher is more economic fueling , anything lower is just waste of fuell..
as you can see the mixture is lean at -5000rpm and +9000 rpm
so the only benefit would be at 9000+rpm and at 500euro for the pc5
and 250euro dyno set up time , I just don't see the point of gaining a few hp at full throttle..160hp on a naked bike..plenty enough for me.
What the dyno doesn't say , is off course, the more "liveley" exhoust sound, and the 3kg weight gain, with all cables and valve controller removed.Also it seems to get up the revs more fast than with the cat.
normally 3th gear wheelies you have to be commited , now it goes much more easy , also in "normal" going with the traffic flow accelerations , in second gear the head shakes as it want to go in the air..this is also new.
So to be clear , the blue lines are completeley standard bike
the red line, with tambu headers , and the green line, with tambu headers and titanium corse silencers
cheers
Peter
 

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Thanks for that info, Peter. Great results, congrats
.

On the Tamburini headers each cylinder combines to the other much later into two compared to the MV Corse / Arrow set up. In theory the Tamburini should perform better than the arrow / MV Corse)

I myself put on the whole MV race kit (headers & ECU) .

Will have it dynoed and mapped in a few weeks. There is a shop that can access all Magneti Marelli maps via Alientech, that means also ignition maps. That's what guys here complain about.....
And no additional module installed.

I'll pay much less for the whole work than a PC5 is without mapping :) . That guy used to do Moto2 engines. Appointments are 3+ month :jsm:......

I'll post the graphs here.

BTW: you should update your profile ;) . I tought you ran a F4.......
 

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Discussion Starter #4
Thanks for that info, Peter. Great results, congrats
.

On the Tamburini headers each cylinder combines to the other much later into two compared to the MV Corse / Arrow set up. In theory the Tamburini should perform better than the arrow / MV Corse)

I myself put on the whole MV race kit (headers & ECU) .

Will have it dynoed and mapped in a few weeks. There is a shop that can access all Magneti Marelli maps via Alientech, that means also ignition maps. That's what guys here complain about.....
And no additional module installed.

I'll pay much less for the whole work than a PC5 is without mapping :) . That guy used to do Moto2 engines. Appointments are 3+ month :jsm:......

I'll post the graphs here.

BTW: you should update your profile ;) . I tought you ran a F4.......
Thanx Cherche
I strongley recommend a dyno before mods and then one with mods,both on the same dyno
The only way you will clearley see the diff.
btw
I have 2 mv's:naughty:
my 2005f100s mamba
and my brutale
I have pics of both in my gallery
cheers
Peter
 

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Here's the MV Corse header in comparison:







I must admit I like the Tamburinis more than the MV Corse headers!
 

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Had her dynoed with the MV Corse set. First we had much problems with the Rexxer Platinum drivers - the next day they sent us the right ones.

Because of all this trouble with the software we unfortunately forgot to do a dyno before mapping :thewife: .

Here's the dyno sheet, power at rear wheel. No tricks with brakes etc. (Checked it ;) ) . Done on one of the hottest days in Germany - nearly 34°C.



No snorkels, no inner tubes (only the 2010+ models do have these in the airbox).

Fuel consumption came down from app 10 liters to 7,5 liters per 100 km. MV Corse ECU was waaaaaaay to rich (adjusted by the dealer to 2,5 % CO according to the instructions).

Engine is very smooth now. Never never go for a MV Corse ECU - waisted money :banghead:.

Jochen
 

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If the std ecu is at it limits of adjusting (mapping limits) to the lambda input it will not add extra fuel.
Or does not get more air due to restriction (filter, airbox) there will nothing been gained.
For real power you need to burn every bit of air by supplying fuel, fuel-air 12,5 Mv recommends
 
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