Cobra Jet MAF & Cobra Jet Throttle Body

[Birdman]

Originally Posted by The Natural

So will this CJ MAF be able to be adapted to my JLT intake tube?

It's not that simple it might actually be too big and cause idle quality issues.(not saying that it is )
Tests will be done on this very soon and results will be posted as soon as possible.

(if a meter is too large it will slow the air flow down too much and the sensor will not be able to get a proper reading durring closed throttle mode)

[The Natural]

Hmm, I like being able to flow more air, but I'm not liking the prospect of having to buy a completely new intake tube.

[JTB]

Also aren't the injectors larger on the CJ?

More Air means more fuel.

[Birdman]

Originally Posted by JTB Consulting

Also aren't the injectors larger on the CJ?

More Air means more fuel.

Yes they are 80lb injectors ,but you only need injectors big enough to support your power level.

The stock injectors are 52lbs capable up to approx 700rwhp max.

What you first have to be careful about is maxing out the stock mass air sensor. Both the FRPP and the JLT meter use the stock sensor.

The FRPP CAI meter using the stock sensor can measure up to 24kg of air flow ( about 667rwhp max )

(The stock air-box pegs at or around 475rwhp)

Anything approaching or exceeding the 667rwhp level would be time to consider going to either the larger CJ meter & stock sensor( very expensive) or changing to the HPX sensor (around $250)with the FRPP or JLT meter .This would make both of those meters capable of supporting over 1000rwhp.

[gr8snkbite]

any update on the maf/hpx sensor testing

[Birdman]

Originally Posted by gr8snkbite

any update on the maf/hpx sensor testing

Yes it works perfectly with the FRPP meter and the proper mass air curve has been established on the flow bench, unlike using a Mafia .

[gr8snkbite]

Originally Posted by Birdman

Yes it works perfectly with the FRPP meter and the proper mass air curve has been established on the flow bench, unlike using a Mafia .

nice..thx..since im runnin jay's cai, looking at just using the hpx sensor

[Birdman]

Originally Posted by gr8snkbite

nice..thx..since im runnin jay's cai, looking at just using the hpx sensor

It will of course require a new meter curve to be over written in your tune but that's all.

Professional mass air may have to have one of Jay's meter's to plot the meter curve for that meter unless they already have done that....piece of cake.

[gr8snkbite]

Originally Posted by Birdman

It will of course require a new meter curve to be over written in your tune but that's all.

Professional mass air may have to have one of Jay's meter's to plot the meter curve for that meter unless they already have done that....piece of cake.

it appears justin has already done that with an excel spreadsheet on his site. basically input your maf size, and it automatically computes the values (converting kg to v)...at least thats my take on it...

[Blackshelby]

Originally Posted by Tucker

What I don't understand is the size being 122 and it fitting in the stock upper tube?
The stock tube at the MAF end is only 4.5" ID
4.5" is just shy of 115mm
So how are they getting a larger close to 5" housing into the stock upper tube?
Is the tube different?

Can you take a picture of the MAF with a tape measure on it?

Jay

Here are the pictures I promised.
Sorry for the delays
Flow work was done with the filter and inlet tube on the MAF and off.
The only item that was found to be a restriction was the air filter (one in picture on the 113 ford cai). That filter started to have a pressure drop around 2300-2400kg. When replace with filter in the picture on the new MAF, there was almost zero pressure. All flow testing was taken up to 3200kg which equals 1600cfm or enough air to support 1066HP.
I will be testing the new MAF on the dyno against the ford 113. Will also be testing Ford's new TB(I am expecting to be on the dyno in a week or two)
Will post result when completed.

[68fastback]

BlackShelby rocks!

[Joe G]

Originally Posted by 68fastback

BlackShelby rocks!

No doubt!!


-

[gr8snkbite]

nice info BS...thx for your testing..

[Birdman]

Originally Posted by Blackshelby

Here are the pictures I promised.
Sorry for the delays
Flow work was done with the filter and inlet tube on the MAF and off.
The only item that was found to be a restriction was the air filter (one in picture on the 113 ford cai). That filter started to have a pressure drop around 2300-2400kg. When replace with filter in the picture on the new MAF, there was almost zero pressure. All flow testing was taken up to 3200kg which equals 1600cfm or enough air to support 1066HP.
I will be testing the new MAF on the dyno against the ford 113. Will also be testing Ford's new TB(I am expecting to be on the dyno in a week or two)
Will post result when completed.

Jim ,

Thanks for the pics and the flow bench testing info especially compared to the FRPP CAI .

So there was no air flow restriction in the stock rubber air inlet tube but the conical filter with the closed front end was a restriction. Very good to know !

It's amazing how much better the other filter with the extra surface area in the front cone was . So much so that it will support over 1000 HP whereas the other one will only be good up to about 770 hp.

It will be interesting to see how the CJ meter preforms in your dirveability and power testing on the dyno and the street.

[hydro]

Thanks Dan,I have a couple of friends here that pulled me over.hydro

[Birdman]

Originally Posted by hydro

Thanks Dan,I have a couple of friends here that pulled me over.hydro

Yeah ...now don't be a stranger....we want to here more about you and your car with pics too !

[King Cobra]

Originally Posted by Birdman

Yeah ...now don't be a stranger....we want to here more about you and your car with pics too !

+1 Hydro, don't be bashfull. Lots of fun here and always looking for more tech info.

Cal

[68fastback]

Originally Posted by hydro

Thanks Dan,I have a couple of friends here that pulled me over.hydro

For sure... ;-)

[Eddie G]

So my question is, would this sensor work with the KB 2.8H and stage 3 intake aka Ford GT intake

Ed

[Birdman]

Originally Posted by Eddie G

So my question is, would this sensor work with the KB 2.8H and stage 3 intake aka Ford GT intake

Ed

It will as long as the mass air meter you are using has had it's meter curve plotted by PMAS. You would just need to give them a call .