S4RS - DP chip solves running issues ? (1st post and I need help)

[masterkush4u]

DP chip or NOT to DP chip that is the question. (S4RS Tricolore)

Oh and Hi Guys my first post -

I can get a 'spare' ECU flashed to a 'virgin' DP map, in the states for £150 + £50 ($250 + $90) for 2 way shipping.

For those that may not know the DP chip has a different and richer profile to match the 'full race' Termi system with open airbox. It allows the bike to have an 'extra' 1000rpm and rather importantly disables the Lambda sensor and so nullifies the 'closed loop' system (up to 5k rpm and xx% throttle opening).

Because it disables the closed loop it allows the fitting of a PCIII with a dyno set custom profile which without this would be pretty much a waste of time and money.

The 'virgin' bit means that it has not been 'red key' locked to a specific bike, so is just like a new chip from Ducati...it even has the same part No# sticker on it.

I have a 'hybrid' setup as many here do on various bikes.
Though the 'principle' of my question could apply to a number of aftermarket more free flowing setups that are NOT the standard Termi race ones (ie:  Arrows), I will outline what I have.

I have a Termi 'race' silencer otherwise known as a 'Shorty'
(Its a very short GP style can that fits onto the original WITH CAT pipes) Open airbox and DP filter.

With this setup, below 5k rpm the bike is all but unusable and there may well be an issue at higher revs with the bike running too lean which could endanger valves etc through running hot.

Though I do appreciate that the full solution is the DP chip AND the PCIII AND a custom map AND a set of 'decat' pipes, I'm too poor to afford all this at the moment. I would like just the DP chip to be a 'first' step (but hopefully enough) in an evolutionary approach to tuning the bike.

My Questions:

Would the use of the DP chip (alone) be a better match, and probably solve my low rpm running issues, than the standard chip?

Would this be 'safer' than running the setup with a standard chip, as presumably the profile is richer throughout the range?

Will this 'fry' the catalytic converter?

Can I do the required(?) Throttle reset(?) myself?

................... or should I just get a Fat Duc at £80
and forget anything else until I have a spare £1000 (never?)?

PS I do not use this bike on the track so maxing out BHP is not my first priority.

[corey]

how did the bike run in the low RPM range before the pipes went on?
i don't have much 4valve experience, but my 2valve 800 ran fine without ANY pipes coming off the udder (cat. converter)...

[ducpainter]

paging ducvet or brad black to the dmf courtesy phone please.

[Bill in OKC]

Well, I'm not in the same league as Ducvet or Brad Black but I had similar problems with my '07 s4rs.  The DP ecu fixed everything for me.  I've got a full Arrow system (no cat) and no airbox, just pods.  If you get the technoresearch tool, you can set the tps and idle trim yourself, otherwise you'll need a dealer to do it.

[masterkush4u]

Hi Guys, thanks for the response.
The S4RS runs very badly below 5k straight from the dealer.
With the modifications outlined above (below? lol) it's unrideable hence it's back in standard trim at the moment

My UK dealer is AWFUL though
The radiator fixing bolts fell off, the headlight pointed at the sky and the pillion footpegs had boot marks on them and the tyres were dangerously under-inflated. All discovered when I got home from the 50 miles to pick it up.
Sooooo I've no idea whether it was set up competently in the first place - I doubt it.
(I'll save you from all the other details of the trouble I've had with them.)

Oh Tech Gods please come to my rescue!!!!!!!!!

[brad black]

the only question of dp ecu suitability is what difference the short muffler makes compared to the twin slip on mufflers.  i doubt it would be much.  i'd make sure you get the slip on kit ecu, not the full system ecu though.

if your bike runs badly because of the closed loop system then the dp ecu should go a long way toward fixing it.  but it needs to be set up by someone with the appropriate diagnostic tools or else you're wasting your time pretty much.  tps reset and idle mixture setting, both done electronically.

i haven't ridden a s4rs with a slip on kit, only ones i've ridden have been std or with full systems fitted, so i don't have any idea how well that ecu works.  but it comes down to options, and it's about the only one apart from going to a replacement ecu like the nemisis or microtec.  certainly much cheaper.

[corey]

talk to monstermash. he can flash your current ECU to DP specs for for less than half the price of buying an actual DP ECU.

thread:
http://ducatimonsterforum.org/index.php?topic=15502.0

also, do you have a 14t front sprocket? it might not be a complete solution, but it could possibly help the low-end rideability quite a bit.

[masterkush4u]

Thanx Brad,
I followed many of your Aussie adventures on the dyno in days gone by so I know you know what you are talking about. 

Stupidly I had forgotten about the slip on kit ECU. 

I believe when Ducati first brought out the 'shortie' they supplied it as a kit with open airbox, DP filter and the same DP 'semi-race' ECU that they still supply with the Termi slip-on kit. They now supply the shortie alone and say it runs OK with the standard setup (no open airbox or ECU) but it doesn't of course.   

This option would also allow me to CORE a spare standard exhaust system I picked up with the spare ECU (all for $60 US WhooooHoooo) as a stealth system, and run that with an open box as an alternative to the shortie. Looks legal enough to get by UK inspections and police stops. (Remember the whole E3 regs are European regs and that's where I live.) 

The down-side to this option is it is kind off a full stop to further progressive upgrades, but it will stop me spending money I don't have. 

If I could get close to say 130 at the rear wheel I'd be more than happy. 

To those that have suggested 14t front sprocket - tried that as a first option being the cheapest.
It made a small difference. 

[RUFKM]

I have a 2007 S4RS with Zard's exhaust (not cat box) and the FatDuc.  The bike runs perfectly.  A huge change from the nearly unrideable condition it was in.  The increase in the low-end torque led me to change to a 14t front.

[Keld]

If I could get close to say 130 at the rear wheel I'd be more than happy. 

That should be possibel with a shortie, but I think you need to have a custom map made for that. 
I have just above 130hp with a shortie, better air filter and Nemesis. but with a flash of the stock ECU you could reach the same numbers, but as stated I think you need a custom map.

[masterkush4u]

Again Thanks Guys,
All experiences in fixing 'THE PROBLEM' with the S4RS are useful.

[stopintime]

Is the shorty udder only, or can it connect to normal mid pipes?

[masterkush4u]

It will work with de-cat pipes too.
It's seriously loud though (much less of a legal issue in the states I think)