How to custom map your own bike?

[ibb88]

How hard is it to custom map your own bike? I just don't see how copying a map works for each individual bike. Though they are the same they are all different individually.

[1000RR]

Originally Posted by ibb88

How hard is it to custom map your own bike? I just don't see how copying a map works for each individual bike. Though they are the same they are all different individually.

You buy a PCV, install it and then you make sure your PAIR sys/valve is plugged/closed and take it to a dyno shop. They will ask you some questions as to what you're wanting to achieve, and they create a custom map for you and it will be loaded on your PCV.

You could also buy an AutoTuner... either will net you a custom map for your bike.

[Nigel]

Originally Posted by 1000RR

You buy a PCV, install it and then you make sure your PAIR sys/valve is plugged/closed and take it to a dyno shop. They will ask you some questions as to what you're wanting to achieve, and they create a custom map for you and it will be loaded on your PCV.

You could also buy an AutoTuner... either will net you a custom map for your bike.

........ the auto tune giving the added benefit of continuously adjusting for atmospheric conditions.

N.

[Richard5]

so would u get custom map and then put autotune on or run stock map

[Nigel]

Originally Posted by Richard5

so would u get custom map and then put autotune on or run stock map

Just get a PCv with Autotune. You don't have to have it mapped. You set the targets and it does it for you.

N.

[Mr. T]

Originally Posted by Nigel

........ the auto tune giving the added benefit of continuously adjusting for atmospheric conditions.

N.

Modern Fuel Injected bikes make adjustments for atmospheric conditions.
Plenty of sensors monitor and adjust for varying weather.

[RansomT]

I tune bikes on the side to help pay for my racing habit and have been doing such for many years.

I tell you some secrets that I have found out, some recently.

1) Bikes with extremely high efficient head flow, have more of a tolerance with the tune. In other words, they make almost the same power running on the slightly rich side as they do "dead on". While I haven't put my S1Krr on my dyno yet, I am sure it would fall in that category (darn 600 mile limiter). My Hayabusa with a "uber-dollar" head, makes 207.5 wHP on pump gas at 13.1:1 AFR, it makes 204 wHP at 12:1 AFR.

2) While it is true that most bikes built in the past 10 years have enough sensors to adjust properly for atmospheric conditions, they do so based on a programming assumption of a stock engine. Once you modify, in anyway, the stock setup, the atmospheric adjustments become less and less accurate as you modify further away from stock. That is why I rather "burn the ECUs" than use a Power Commander when possible. I have more control that way.

3) In all due respect for the Power Commander folks, their off the shelf maps typically are on the rich side of things AND while close, the shape of the maps are sometimes questionable. However, given that they have to setup the maps for the "masses", including knuckle heads that run crappy fuel, they overall do a good job. But, tuning on a dyno has definite advantages even with an autotuner. Even if your autotuner is “dead on”, it would wise to just check it on a dyno. (more worried about 100% throttle than anything else).

[Prowler]

i have a completely stock bike with a PCV...do i need to plug the pair valves?or is that if i get a map made?

[Nigel]

Originally Posted by Mr. T

Modern Fuel Injected bikes make adjustments for atmospheric conditions.
Plenty of sensors monitor and adjust for varying weather.

That's right. And they adjust to the bikes own target A/F ratio. Have you seen how lean the BMW is in the middle and how rich on the top?

The A/T adjusts to your target, not one set up for the greeny regs etc. The net effect is that you can get up to 15 hp with a good map, pipe and filter and have that adjusting to atmospheric conditions.

N.

[Nigel]

Ransom, you make some good points. But for info on the BMW. We live at altitude the bike runs at 12:1 up top here. By leaning it out to 13.2 for example we get gains of up to 10 geegees. So this certainly does not like to be that rich.

N.