Power Commander III advice for S4R

[cakeman]

I am looking at getting a PCIII for my 2004 S4R (no O2 sensor). I have got rid of the cat and replaced it with a QD mid pipe & it has Termi slip ons and will be doing the Open Air Box soon.

Reason i am looking at getting it, that it has been tuned numerous times after the mid pipe has been put it but there are still problems up to about 4500 rpm. It coughs and splutters till then, but once it hits about 4krpm it really takes off. Also on the over run (down shift, slowing down etc) it is back firing and throwing some small flames out the back (only with in the 0-4000rpm range). It has been richened and tweaked a lot of different ways but still the same or similar result.

Ive been suggested to look at getting the PCIII, i just want to confirm a couple of things before i go down this road....... Seeing i dont have an O2 Sensor, i can still tweak the mixture all the way through the rev range? Not just over 19% throttle and 5200 rpm as for the later S4R's?

And generally, as it doesnt have the O2 Sensor, its a pretty standard install?

I am looking to get a map off the net first and see how that runs for the above mods, if not to great i will get it dyno'ed and tuned after..... I cant seem to find any maps for a 2004 S4R monster wit the mods mentioned above.... Can anyone point me in the right direction ?

Thanks in advance

Andrew

[J5]

be hard to find exact monds

but

http://www.powercommander.com/powercommander/powercommander_iii_usb.aspx?mk=5&mdl=193&yr=2007&pcVersion=411&PartNum=733

acro full system, filter , no airbox lid

arrow full sys, k&n , cut airbox lid


prob a good start

[DarkStaR]

You should be able to tune the whole rev range with the right PCIII.

Standard Install.

As for canned maps...it's rarely a hit, and mostly misses.  My advise, install it, and take it straight to the dyno.

Also, depending on how many miles you have, you might want to wait to do it after getting the bike serviced and do all other engine mods first so it can be tuned all together.

[Howie]

If you are shooting flames when closing the throttle to shift and CO trim does not cure the problem something is wrong.  This should  be fixed before the PC is added.  I would check all basic settings and the throttle position sensor first.

[cakeman]

All basic settings,tps, tb balance etc are at the base settings. The problem has only come about since the mid pipe install, I have been told that because of this it is lean in that specific rev range and only an aftermarket ecu can fix that...

[Howie]

I agree you will need the PC to take care of your part throttle lean condition while cruising and accelerating.  The flames out the exhaust when you close the throttle to shift might is either TPS problem or CO trim was set incredibly rich.

Oh, check for an exhaust leak too.  You need air to create the big bang and flame.

[cakeman]

I agree you will need the PC to take care of your part throttle lean condition while cruising and accelerating.  The flames out the exhaust when you close the throttle to shift might is either TPS problem or CO trim was set incredibly rich.

Oh, check for an exhaust leak too.  You need air to create the big bang and flame.

The exhaust was recently taken apart and put back together and gooped up making sure there is no leak. so thats covered.

Im no mechanic and dont claim to be, but the fellas i see are pretty good.... almost to good to miss something like that. I ll bring it up when im there next, but dont want to insult their intelligence

[Jumptship]

I have a 05 S4R with an open airbox and Arrow full exhaust, before installing PCIII it was HORRIBLE with alot of the same issues you are experiencing.  Installed the PCIII with a canned map from Dynojet and it was better but not good in the 4-5K range at steady throttle, accel and decel were good.  For my 12K service I took it to Ducshop and had them tune it all together on their dyno.  Result was like a whole new bike with excellent response in entire rev range and steady, smooth operation in previous problem area.  Well worth the cost.

[cakeman]

I have a 05 S4R with an open airbox and Arrow full exhaust, before installing PCIII it was HORRIBLE with alot of the same issues you are experiencing.  Installed the PCIII with a canned map from Dynojet and it was better but not good in the 4-5K range at steady throttle, accel and decel were good.  For my 12K service I took it to Ducshop and had them tune it all together on their dyno.  Result was like a whole new bike with excellent response in entire rev range and steady, smooth operation in previous problem area.  Well worth the cost.

Thats great news Jumptship, thanks! I was begining to think it was going to be a viscious circle of putting this in, doing that, changing a million different things...... You have given me a bit more confidence to this being the cure to my problem.

Just a quick question, did you have your monster pre full exhaut (ie with the catalytic converter)... I am curious becuase did you notice much of a difference from stock to full system with mid pipe with PCIII? The reason i ask is because mine ran well with the termi slip ons and with the cat.... will i see a much more out of it with the PCIII and full system etc.....

[braando]

Andrew.....Brian here mate.......mine does similar but to a much lesser extent....meaning...i get the backfiring and splutter only when backing off. George & Shaun told me today of a guy with a blue S4R having problems so i presume it is you. When it was recently dyno'd i was told it is running way too lean.......mainly cos the previous owner did the full kit, minus the DP ECU.....mine is still stock...  They both seem to think that the PC111 will fix yours.......or........Michael from Carbom Imports sells those Microtech units which he swears by. But they are double the price......then you can actually run two maps, you change it by depressing the starter button while the bike is running. Definately needs to be dyno'd to produce decent ones as the stock maps are not crash hot. now you are really confused i bet....!

brian

[cakeman]

Ive got the PC3 installed on my s4r now.  But cant get it dyoned until after xmas (shops here are booked out). On the over run with the custom map it is still popping but not as much (in the 3-5k rpm range), that is with the throttle position at 0 and 2. I have Tried adding more fuel but it only gets worse, so when i lean it out from 3-5k rpm it gets better, i am at -20 values for these throttle positions but dont really want to go any further down as it seems quite low.

Anyone have any ideas?

Thanks in advance

[J5]

from all my readings of PCIII

it only works over 5250rpm and 19% throttle

so in the bottom end you have the problem

is it the same for the T motors ?

I have the snap crackle pop if i shut the throttle off

if i shut off at say 8K and decellerate its all nice and smooth until below 5k and then it starts popping , reminds me of old cars escorts.geminis,cortinas etc

[cakeman]

from all my readings of PCIII

it only works over 5250rpm and 19% throttle

That is only for the later model monsters with O2 sensor, on my 2004 S4R it works over the entire rev range