"Does my bike need mapping?"-the definitive answer

[Yogi]

I think I have the final answer to this often asked question. My K3 has a K&N filter and a Remus slip-on with a Powercommander. It appears that with a can and filter the bike actually runs slightly RICH and needs leaning off via the Powercommander at almost every mapping position. If you need proof of this go to www.powercommander.com, download the software then download all the SV650 maps. They all make the bike leaner to a greater or lesser degree dependant on the pipe fitted.

So the answer really is you don't need to remap unless you are after the very last 1/10th of a horsepower from your bike-but you do need to do the TPS adjustment-mine was well out.

Now I've set myself up to be shot down in dlames...fire away :lol:

[650newb]

well i havent got a powercommander or an after market air filter, but im getting an M4 full sys for my curvy.....will i need a remap or something along those lines?

[Yogi]

It seems, from my experience and from investigation on my part, that even with a full system and a free flow filter, that the fuel injected version of this bike will run slightly on the rich side with the mods. My opinion is that you will be ok to run without a remap, although to get things perfect you would need to lean the mix slightly through the rev range, either by TEKA, Yoshibox, or PC3. Like I said in my previous post, I invite lively debate from anyone who has a valid argument against this. I would be interested to see dyno results of slip-on versus full system, I bet the gains from a system are to be had in the midrange, top end ain't worth jack on UK roads any more anyway :!:

[mattSV]

650newb wrote:-

but im getting an M4 full sys for my curvy.....will i need a remap or something along those lines?

Yogi wrote:-

My opinion is that you will be ok to run without a remap, although to get things perfect you would need to lean the mix slightly through the rev range, either by TEKA, Yoshibox, or PC3

So how does a TEKA, Yoshibox or PC3 work with carbs then? :wink: :roll:

[Yogi]

What I really, really hate is a smart ass, especially when I'm replying to a post I misread at 1am under the influence of copious amounts of tequila...however my first did specify a K3 which as you all know is injected, and I stand by my comments. For a curvy carby jobbie the honest answer is-I dunno! I think that the needle taper leans them off from the mid and up, and they run lean at WOT with a system, which means at least shimming the needles and upjetting-I'm sure others will chime in at some point soon. Now, where's that bottle.................

[Yogi]

Oh yeah, and he/she did ask about a REMAP......................

[mattSV]

YOgi wrote:-

What I really, really hate is a smart ass, especially when I'm replying to a post I misread at 1am under the influence of copious amounts of tequila...however my first did specify a K3 which as you all know is injected, and I stand by my comments. For a curvy carby jobbie the honest answer is-I dunno!

What I really, really hate is people who get ****ed and then don't read posts properly :wink:

[TSM]

FI bikes need remaps, Carb bikes need jet & needle changes

The standard ECU on a FI SV can be remaped without the need of a powercommander, many people have done this before and will save you over £200.

[Mike1234]

It seems, from my experience and from investigation on my part, that even with a full system and a free flow filter, that the fuel injected version of this bike will run slightly on the rich side with the mods. My opinion is that you will be ok to run without a remap, although to get things perfect you would need to lean the mix slightly through the rev range, either by TEKA, Yoshibox, or PC3. Like I said in my previous post, I invite lively debate from anyone who has a valid argument against this. I would be interested to see dyno results of slip-on versus full system, I bet the gains from a system are to be had in the midrange, top end ain't worth jack on UK roads any more anyway :!:

Got to disagree with your there I'm afraid. Almost all of the bikes I've seen have run on the lean side when a full system is added and a filter will only make it worse.

Some of the MiniTwins race bikes have been so lean as to be quite scary but others have been less so. We even had one rider replace his engine recently and had to have his ECU remapped completely differently which wasn't something we expected.

Note also that different batches of ECUs allow you to remap to different degrees which is a concern in itself! If you are just adding an end can you should probably be alright although for under 50 quid I'd be inclined to get it checked out.

[Texan1983]

can a dealer remap it for you?

[Yogi]

A Suzuki dealer will not necessarily carry the tool or have the expertise to remap either the stock ecu or PC3-unless they have a dyno and someone who knows how to use it.

Mike1234-you sound like you are talking from experience, whereas I am trying to assimilate information from many different sources and find a common thread running through it. Are you inferring that all the maps on the Powercommander web site are useless (they all predominantly remove fuel from the stock mapping).

I really thought I'd got a handle on this, but now I think I'm back to square 1-I probably wouldn't even care if my bike hadn't had a PC3 on it when I bought it, but as it has, and I know it hasn't got a custom map, it's worrying me that I could be running lean and causing damage

[SV650Racer]

Big lesson to learn here dont ever go by anything from the internet unless that person is an experienced tuner or technician..or they have 1st hand experience of seeing many bikes run in real time on a dyno.

Yes 99% of the time the bike will need a remap. Carbed or injected. Every bike often is very different to the next and will require an individual map. Thats the problem with the standard PC map as it doesnt cater for variables from bike to bike, therefore a custom made map or mapping done via Teka or Yoshi box is more suitable.

TBH with the full M4 system and airfilter a Yoshi or Teka map is sufficient, spend the extra £200 saving on suspension upgrades.

We do yoshi remaps and so do many dyno places, not all dealers though offer the service.

[Mike1234]

Having spoken to a number of dyno operators the concensus is that even the downloadable maps from Power Commander aren't actually close enough to be much use.

Power Commanders have their uses but as most Suzukis, SV included, allow the internal fuelling map to be modified so a Power Commander doesn't add much.

In all cases when messing with fuelling use a dyno to get the best set up. Even if you aren't after the most power getting the best fuelling is the safest way to go.