dyno advice

[The Other PaulG]

Pls could anyone help with a little advice re: dynos?

I have a Laser pipe on my 1100, and just for my own sanity I want to know that it's not running lean when I'm doing hour after hour at 90 through Spain...

1) I know that dynos measure bhp, do they also monitor the mixture?

2) A fuel injection set-up has a zillion sensors so that it can adjust to different conditions and provide the optimum mixture/amount of fuel... should this not then be able to compensate for the changes caused by the pipe??

3) If I do take it to a dyno-Rod, will he be able to re-map the stanard chip or will I need something like a Power Commander that's designed to be adjusted?

4) Finally, I'm on the Surrey/Berks/Hampshire border - please can anyone recommend a dyno-man who knows his stuff?

Cheers,
Paul G
The other (wish I was as lean as my mixture)

BTW, for some of you wishing to respond, I have attached a template below so you can come back to me more quickly:

"I can't believe you're asking such a bonehead/stupid/dick-head (delete as appropriate) question. With that level of knowledge, you shouldn't even be riding that bike. Get yourself a mobility buggy/wheely bin/personality a leave riding bikes to people who know what they're doing...."

 

[bigchris]

See my replies for each question.

Pls could anyone help with a little advice re: dynos?

I have a Laser pipe on my 1100, and just for my own sanity I want to know that it's not running lean when I'm doing hour after hour at 90 through Spain...

1) I know that dynos measure bhp, do they also monitor the mixture?
Yes they can monitor air/fuel mix by sticking a sniffer down the exhaust
2) A fuel injection set-up has a zillion sensors so that it can adjust to different conditions and provide the optimum mixture/amount of fuel... should this not then be able to compensate for the changes caused by the pipe??
No. A fuel injection does have a zillion sensors, but it only works so far as to avoid detonation using crap fuel, and acting as a choke when needed. It cannot make adjustments outside of the normal range specified from a standard pipe/air filter since it doesnt have the sniffing capability or be able to make adjustments 'real-time' enough.

3) If I do take it to a dyno-Rod, will he be able to re-map the stanard chip or will I need something like a Power Commander that's designed to be adjusted?
As far as I know you cant get a power commander to fit a beemer. Wunderlich do have their own equivalents, but as I understand is not as adjustable as a PC. That said, if you follow their advice, it usually works out ok.

4) Finally, I'm on the Surrey/Berks/Hampshire border - please can anyone recommend a dyno-man who knows his stuff?
If you get yourself onto the dynojet website it will list all the approved dyno testers in the UK. For a quick test you're not looking much - maybe £20 to cover dyno run and printout. If you want to go down sorting out fuelling etc, you're looking cost of ECU chips/pipes/filters and dyno time. So budget for at least £150 for dyno + parts.
Cheers,
Paul G

 

[banzai]

3) If I do take it to a dyno-Rod, will he be able to re-map the stanard chip or will I need something like a Power Commander that's designed to be adjusted?
they won`t do much for your bike but they are great with blocked drains.

 

[Boxadog]

Try Larry at PDQ Motorcycle Developments in Taplow near Maidenhead.

Real time fuel analysis when on the Dyno.

As said you cant re map a standard chip.

Powercomander now do a wide band unit to fit BMW's, but not can-bus wired bikes.

Bob

 

[(RIP) MOTÖRHEAD]

4) Finally, I'm on the Surrey/Berks/Hampshire border - please can anyone recommend a dyno-man who knows his stuff?

As said before, PDQ are good and so is Steve Jordan Motorcycles in Bookham, Surrey.

Steve Jordan MSs

 

[The Other PaulG]

Thanks guys, this has been really helpful.

PG

 

[Dunk]

You can get Power Commander 3s for GSs (1150s anyway) BUT they are expensive due to having a new Lamda sensor or something involved. Mine was about £360.

It's good that you've decided to get it on a dyno. I put on a Remus Y piece and had no problems. I then decided to buy a Remus can, put it on and noticed that I was suddenly getting a lot more MPG.

Checking here a lot of people have got away with just popping the can on and even some sites ( I think Nippy Normans have advice from Remus that nothing else needs doing: just put them on) state the same. I read a report on here that someone had problems with their bike and damaged it. I got mine on a dyno and the fuel/air ratio for my bike went literally off the scale. It was running dangerously lean.

At this point I needed the bike the next week so put my hand in my pocket and forked out for a PC3 (and K+N filter while they were at it). I got a custom map for it as well.

End result: it sounds nicer, but I wouldn't say that performance has improved much. I got a few more BHP (actual was 76 originally and ended up at 80).
It ended up a f****** expensive day.

I think that the guys that leave it as bog-standard, or possibly have the Y piece and standard can are sensible. If you want it to go fast...buy a fast bike in the first place.

It could end up a pricey venture. But hey...you got to spend those wages on something.

 

[The Other PaulG]

Thanks Dunk - words of wisdom!

The truth is that I'm not really after more power - I just really like the sound of an aftermarket pipe (what a complete tart!) and the weight saving's a bonus too.

But is it worth that much?

Not sure.....


Cheers,

PG

 

[bigchris]

rule of thumb, which applies to sports bikes is that if you're just changing the end can you dont need to start messing with a/f ratios.

If you add a full system (header/link/can) or ed can + after market then you should at least get it on a dyno to check that its ok.

Also note that PC3's arent guaranteed to increase bhp (for instant take these R6's, if you change the exhaust you loose power no matter how much tinkering..) but will save your valves burning out, cams being destroyed, piston rings being fried etc...

And it looks well cool when you you roll up and show it off to the masses...