Could you take a look at this Turbo Map?

[Audiomaker]

Hi All,

Here is a map of my 2002 Turbo Busa.

The bike runs OK at moderate speeds (legal commuting), but falls on it's face (stutter/cough) under any kind of hard(er) acceleration.

This is the map that was put in my bike after two days on the dyno.... but I think something's wrong.

Any ideas?

Thanks
Sean

 

[2wicked]

I've never seen a bike need more fuel in the 60-80% columns then what is in the 100% columns, my guess is they did a load based tune, working their way up to 100% throttle, at which point the bike and intake were so frigging hot that it was running rich, so they just kept pulling fuel out. Now under normal operating conditions its too lean at 100% throttle,

Richard

 

[Audiomaker]

Let me be more clear about something...

If I roll the throttle on slowly (pretty slow), the bike will pretty much get into the higher RPMs and boost as I would think it would without chocking or whatever it's doing.

If I roll the throttle on at a medium rate (like getting on a short FWY onramp), it will sputter around 5-7k, then catch and boost. Worse when still warming up (warm but not soaked).

If I roll the throttle on quickly like testing the acceleration (but still not instantly), it will gurgle and kill the acceleration until I've let off and the sputtering is more likely at lower RPM.

I look at this chart being ignorant and just don't understand these numbers. I don't see much linearity in it. There's all these wild card placements... I dunno.

And I also found it odd that the 100% was back to the negative numbers when lower throttle positions are in the positive.

While I'm here.... Is a lower (or negative) number more fuel or less fuel ( is -10 less fuel than +10 or the other way around) when setting a PC?

This really wasn't what I was expecting to see and the bike does not run as it should.

Sean

 

[2wicked]

The #s in the table represent % of fuel change 10 is 10% more fuel, -10 is 10% less fuel,

The map seems way out to lunch to me, there is an awful lot of fuel being pulled out in the mid rpm, mid throttle range,

Richard

 

[POWERHOUSE]

When the install was done, where did you put the IAT sensor?

 

[Audiomaker]

When the install was done, where did you put the IAT sensor?

The what?

 

[BlueHaya]

Air Intake Temperature Sensor

Should be zip tied to the fuel rail or near by. Use to be attached to the air box.

Green Sensor zipp tied in the attached pic.

 

[POWERHOUSE]

We like to get that thing totally out of the engine compartment, especially in hot climates. I just had a customer-installed kit screw with me hard on the dyno. You would pull through a TP column and be at 13.2 and the very next pull would be at 11. This particular sensor was lying on the frame inside the engine compartment, where it got very hot. After untangling that mess and letting it hang outside the frame, the A/F went as planned. It may be the reason your map got unintentionally messed up . . .

 

[Audiomaker]

We like to get that thing totally out of the engine compartment, especially in hot climates. I just had a customer-installed kit screw with me hard on the dyno. You would pull through a TP column and be at 13.2 and the very next pull would be at 11. This particular sensor was lying on the frame inside the engine compartment, where it got very hot. After untangling that mess and letting it hang outside the frame, the A/F went as planned. It may be the reason your map got unintentionally messed up . . .

Ok, I'll check into that.

So, you think this map is messed up?

Sean

 

[POWERHOUSE]

Ok, I'll check into that.

So, you think this map is messed up?

Sean

Yes. I concur with Richard's comments . . .

 

[Audiomaker]

Yes. I concur with Richard's comments . . .

So... I rode this bike for 2700mi like this?

I kept it out of boost 99% of the time, but there was a damage risk right?

Sean

 

[BlueHaya]

Who mapped it for you?

 

[kromdom]

Who mapped it for you?

was gonna ask the same question....maybe contact that tuner??

 

[Audiomaker]

Terri Kizer mapped for me.
Seems knowledgeable and experienced. Not sure why it's like this?

I found the AIT sensor... it's installed.

 

[Audiomaker]

Could someone email me their turbo map so I could have a look at what they usually look like?

I don't intend on using it, I'd just like to get a reference so I can understand what a normal one looks like.

My bike currently has a 7 pound spring and dyno'd at 215.

audiomaker@gmail.com


Anyone?

Thanks
Sean

 

[Boosted Cycle Perf]

Terri like from mr.Turbo?

I've have a few mr.turbo bikes come to my shop with maps that look simular.

 

[Audiomaker]

Terri like from mr.Turbo?

I've have a few mr.turbo bikes come to my shop with maps that look simular.

Yes, that's him.

 

[The Big Red One]

Terri like from mr.Turbo?

I've have a few mr.turbo bikes come to my shop with maps that look simular.

Hmmm....interesting

 

[mysticblu999]

Does having the AIT sensor in the plenum really mess things up that bad? I was thinking of doing this for logging.

 

[OZBooster]

reacts too slow for real logging , you would be better to put a dedicated gm sensor in the plenum
unless your logging with ecueditor , then your stuck with the std sensor