54mm system for 996r
 

Hi,

I have a 2001 996r with the original 50mm system with carbon end cans and chip (supplied with the bike).

Would there be a significant difference going to a full 54mm system? and would I need another chip?

Thanks

Fraser (fraggle)

Never rode my 998R with the standard 50mm system so can't say what difference the 54mm makes.
Going on experience from a 998 I owned changing the exhaust did upset the running when on the standard ECU and fitting the correct ECU did sort out the running / starting issues.

Alternatives are to go for a Power commander or getting the stock ECU remapped by someone like Wilf at Moto Rapido

The system on the bike is the standard header and link pipe with race cans and chip supplied with the bike. Was really just wondering if a new chip and bigger pipes would make a big difference.....and also where would I source one?.....they seem to be quite rare??

You could go for a 54mm half system?

Would that make a significant difference?

I have a 998s and when I fitted Termis and a PCIII and had it set up on a dyno I enquired about fitting a 54mm system.

The man said yopu would gain about 1-2 HP at the top end but loose lower down.

H e did say it's only worth fitting if you have head work done at the same time.

I'm very very happy the way my 998s goes now.

Is that a 50mm system all the way through?....also, who makes the PCIII chip? (Power Commander?) I guess its programmable?

PC111, as in Dynojet Power commander 3, ideally you want the USB (PC3 USB) version as you can set this to advanced setup where each cylinder can be mapped seperately, you can also have the Accelerator pump option initialised and setup. It piggy backs off the original ECU by tapping into the injector wiring (easy plug and play installation) and also takes a tap off the Throttle position sensor, and allows the tuner to play with the injection opening times to optimise the air/fuel ratio through out the rev range and from closed to fully open throttle

I'd expect a bit more than just a 1-2 bhp gain with a 54mm system fully mapped.

And it'll sound nice!!

Thanks for all the feedback guys, really helpful and definitely something to think about!

Yes, 998S has 50mm system.

from my reading the 50mm headers with 50/54 midpipe and 54mm end cans is the best way to go as the full 54m system adds top end (9.5K rpm+) power at the expense of more usuable bottom end and mid range

also you will prob need to open up the air inlets in the nose fairing as this is a bottleneck. filter choice can make a big diference too.

forget a Power Commander (unless you have a very cheap one sitting round already), get your ecu repmapped by

BSD or CJS Racing

it will cost the same money and be better than a PCIII and dyno time anyway as more factors can be adjusted and at higher resolution than the PCIII

Thanks for the response, the 50mm headers with 50/54 midpipe and 54mm end cans is the way I would like to go. I already have the chip fitted which came with the 996r to support the 50mm Termignoni end-cans (and complete 50mm system), would this need to be changed?

Does anyone know the number for the race chip?

Is there a quick way to check when fitted to the bike?

Had a quick search on Google and found the following, anyone dispute this?

If it's any help, here are the numbers off the "stock" 996R ECU for the 50mm road exhaust, and the "race/open pipe" 996R ECU for the 50mm Termis.

The "stock" 996R road ECU has the following numbers on one side:
IAW59M 996R DUCATI007

On the other side:
S10DB104


The 996R "race/open pipe" (Termi) ECU has the following numbers on one side:
IAW 59M.A4
IAW 59M.A4/HW010/0115_115
12V= 129 01
OL +CVI95B

On the other side:
61600.655.00
996R
DUCATI007SA

have a 50/54 mm ecu here and the codes on it are
61600.630.00
996r
ducati007
ducati part code on the box is 96506801b
central 59mscarich d45 996r
cpu 59m exhaust d54 996r

dont know if the OEM 998s/996r 50mm ecu is the same or not as my 998s is not here at the moment

reading above post makes me wonder if i have the correct ecu in the box!

Data I have on misc 998 ECUs (from my own notes) is:

96506801B = stock ECU for 996R/998S

96507502B = ECU for 996R/998S open / race 50mm Termis

96507402B = ECU for open / race 45mm Termis. Note the change of digit from 5 to 4: basically the variable around whether it’s for 45mm [stock] or 50mm [S] cans.

96507602B = Note that variable ‘6’ = ECU for 998R open / race cans

96507702B = hmm, dunno, ECU for 45mm to 50mm system?

I've just had a look at the ECU in the box with my standard endcans, I have not looked at the bike, so I assume this is the stock, non-race ECU, and the markings are as follows -

61600.630.00
996R
DUCATI 007
IAW 59M.A2
IAW 59M.A2/HW010/0115_099
12v 142 01

Correct, that is the stock ECU for 996R/998S, 50mm road cans, part no. as above = 96506801B.

Thanks for the info, much appreciated, I was a little bit concerned I may have had the road chip with the race pipes!!