experimental cold air

[Alsim]

I already done airbox mod. Today I added a cold air intake from the front of the sled going to the frogskin of the bottom of the air box mod.
I hope this will help

 

[Fred dodge]

Any dyno number yet ?


Envoyé de mon iPhone en utilisant Tapatalk

 

[Alsim]

I'm still waiting for an appointment at Solution Injection...the guy are so busy!

 

[RTX]

Nice work.
Is it actually tied into the airbox? Or is it just directing the colder air in the direction of the vent

 

[Alsim]

Nice work.
Is it actually tied into the airbox? Or is it just directing the colder air in the direction of the vent

It is directing to the frogsking. I will try to make a flap after the vent to deviate the cold air in the vent too. If it's works I will post some pics.

 

[RTX]

It is directing to the frogsking. I will try to make a flap after the vent to deviate the cold air in the vent too. If it's works I will post some pics.

Cool.
Good job.

 

[fx-treme]

Any update on this. been thinking of doing this myself, with just the airbox mod in 30 F weather my intake air temps are between 70 and 90 F degrees

 

[yamamarc]

great idea!!!! if this works well I might fabricate a transition piece for the shape of air intake opennings to fit around out with aluminum and a seal then going to the bottom of rad like you did!

 

[NOS-PRO]

Nice job bud!!!

 

[Alsim]

Any update on this. been thinking of doing this myself, with just the airbox mod in 30 F weather my intake air temps are between 70 and 90 F degrees

Not enough snow to test it. Honestly I have no idea to know if it will improve performance or not...no dyno around here. May be air temp like you mentioned should help to drop a bit...

 

[RJH]

Won't the ECU just adjust for the extra air.. and richin it up..you would have to fool the sensor to make that work.???

 

[cannondale27]

Won't the ECU just adjust for the extra air.. and richin it up..you would have to fool the sensor to make that work.???

No. No sensor to measure air volume just temp.

 

[RJH]

So no O2 sensor then as that is what would catch it.

 

[Mtnviper]

The fuel system on Vipers is what is referred to as a speed density system.
With speed density, there is no mass air flow meter and fueling is based off of RPM, engine coolant temp, air intake temp and MAP (vacuum) sensor readings.
Ideal gas law is used to calculate a VE (volume efficiency) table which is down loaded in to the ECU. The ECU then uses various sensor inputs to find the fueling requirement with in the VE table at a given RPM and engine load.

Generally speaking the O2 sensor is used to fine tune/adjust the fueling table under certain throttle conditions such as light throttle cruising speed.
Typically the O2 sensor reading is not used at wide open throttle and fueling is based off of the programmed VE table programmed in the ECU.

When the O2 sensor is not used, then all fueling requirements are based solely off of the programmed VE table with in the ECU.

Bill

 

[RJH]

Interesting...but I am missing something...sensors are sensing either the air or pressure in the chamber is changing..and if there is more it will try and richen it up..if the ECU can't find combination it has been told to look for I assume it will just guess..

Is it a speed density from idle to full speed?

Whare can I read more about that system?