Turbo heads?

[WyoBoy1000]

If you want put -2 key, don't forget that your EGT will go up.
IMHO

Not always,

most of the time retarding the timing will burn more fuel on the way out the pipe than in the cylinder so the egts will go up. So if there is any deto happening the egts can read lower because the heat gets absorbed in the cylinder and is cooler on the way out, to much fuel leaving the cylinder can cause higher egts because it burns some of it as it leaves the cylinder into the pipe. If you put in a -2* key and the temps go up you have a tuning issue or possibly you had some deto happening. 25% deto is not uncommon and usually wont hurt anything its when the deto gets to the 75%+ that is starts to really do damage. I think a good tuned sled on the right boost and fuel wouldn't change much with a -2* key.

There is also the factor of the stock pipe sensor, and no one seems to really know what it does for sure. I think it can control timing and fuel, if it does a key will have an effect on it as the ecu has a set program for timing running with the pipe sensor so it may try and over ride the key in some ways changing the fuel and timing characteristics. This is Complete speculation on on the pipe sensor but something to think about.

 

[ghost rider]

TPS

Pm Cosarguy, he has some experience adjusting the throttle position sensor on the cats.

 

[diggerdown]

I played around with the TPS on my King setting to the lowest and highest range of the setting. I could not tell any difference in top rpm or low end throttle responce. I saw no change in my egt's. Not a turbo but I didn't think it changed the timing by very much if any. Has anyone tried to doubble up the base gasket or is the port height already maxed?

 

[WyoBoy1000]

I played around with the TPS on my King setting to the lowest and highest range of the setting. I could not tell any difference in top rpm or low end throttle responce. I saw no change in my egt's. Not a turbo but I didn't think it changed the timing by very much if any. Has anyone tried to doubble up the base gasket or is the port height already maxed?

Key words not a "turbo", most likely you had a plenty of octane to prevent deto, I would bet if you only ran low boost and adjusted it you wouldn't see much of a change.

 

[Prairie Dog]

Cutler does a shave on the heads for their turbo kits. I think Brent Linderman does that stuff for them.......Linderman might know a thing or two about modding heads

 

[JasonAK]

I wonder If RKT could build a low elevation turbo head that still gave you a good pre-boost bottom end.

 

[powderpilot]

A couple of guys I ride with were running Boondocker's timing key this year, and they swear by it. I'll be running one next season for sure.

 

[realbass]

Can you explain? I would have thought the opposite.

I run about 1150 max egt, so I'm ok with that.

Sorry. This is only theory. Your experience useful for me.

 

[TheBreeze]

A couple of guys I ride with were running Boondocker's timing key this year, and they swear by it. I'll be running one next season for sure.

Timing key, or timing control?

 

[powderpilot]

Timing key, or timing control?

Reid from BD Canada called it a timing key, but it controls timing on both the bottom and top ends, so I guess both are right.