Setting Turbo Boost with boost foolers

[907DAVE]

Cody, can you verify that the Low Boost Fuel map acts as a limiter and not as a delay?

I have not been very successful when trying to control fueling with this map.

[cleatus12r]

I wrote up a HUGE story on that yesterday evening, Dave, but when I hit "post quick reply" a database error showed up and ruined my night.

I'll retype it at some point today for you.

Have any luck with those normalizers yet?

[907DAVE]

Not yet, been on the road since Friday evening. Plan to hit it hard early
next week.

[ChrisCNC]

Got the boost fooler installed, the Overboost Annihilator is preset to 22-23 psi.

What are your reasons, Cody, for saying these are a good idea? I would think at the very least, it is protecting the MAP sensor from pressures greater than for which it was designed.

I was surprised at how small the sensor is, for curiosity sake, I'd be interested to know if this is a MEMs sensor, can't find any information about it one way or the other. Doesn't matter I guess.

Does anyone know about the difference between the MAP PID on the Gryphon versus the Turbo Boost PID? Are both of these coming from the MAP sensor? If so, then is one value inferred from the other?

[cleatus12r]

I never said they were a good idea. They are a fix (work well for it, too) for overboost codes and defueling. That's it. People have been sending 40+ PSI of boost to the MAP sensors for years without problems.

If you think about the terminology.....
MAP Manifold ABSOLUTE Pressure will be way different than Turbo Boost GAUGE pressure......by about 14.5 PSI (or whatever the barometric correction is).

[ChrisCNC]

Thanks Cody,

That is why kinda I figured one must be inferred from the other if both PIDs were coming from the MAP sensor. I'd assume that the MAP PID is the actual converted signal coming from the MAP sensor and the Boost value is simply this value less the barometric pressure...or there abouts.

-Kevin

[cleatus12r]

Originally Posted by 907DAVE

Cody, can you verify that the Low Boost Fuel map acts as a limiter and not as a delay?

I have not been very successful when trying to control fueling with this map.

I'll get some datalogs when I go to town today. I decided that typing something out and hoping that it makes sense would be inferior to actually SHOWING what's going on there.

[Jeremiah25]

Originally Posted by cj45lc

All I know is there is no defueling with the tunes so I believe the OA is a waste of $$

Originally Posted by cleatus12r

I never said they were a good idea. They are a fix (work well for it, too) for overboost codes and defueling. That's it. People have been sending 40+ PSI of boost to the MAP sensors for years without problems.

I would like some clarification after reading these two statements. Will the truck defuel, while using PHP tunes, if the map sensor sees more than 23 psi?

I have a Gryphon CS coming with 40, 80, 100, 120, and 140 hp tunes and would like to get the most out of them.

[cj45lc]

Originally Posted by Jeremiah25

I would like some clarification after reading these two statements. Will the truck defuel, while using PHP tunes, if the map sensor sees more than 23 psi?

I have a Gryphon CS coming with 40, 80, 100, 120, and 140 hp tunes and would like to get the most out of them.

I'll just say this, my boost gauge has been to 28-30 a few times & the truck is still pulling hard when this happens

[907DAVE]

Originally Posted by cleatus12r

I'll get some datalogs when I go to town today. I decided that typing something out and hoping that it makes sense would be inferior to actually SHOWING what's going on there.

Any luck with this?