75mm mass air flow meter installed,,wont idle?

[5.0Droptop]

You must be one of the lucky ones!

No..... more like some one who knows what hes doing. I think you need to find out for sure what your Pro M is calibrated at. Check your fuel pressure and timing etc.

 

[willys1]

You need to have a 24# meter with 24# injectors. A Cobra maf is a 19# maf and it will not work with 24# injs unless you have the cobra eec..I already went thru this with the FMS tech line and they told me if I want 24# injs I should Buy a Pro m. MAF


For those who are saying PRO M is Junk I think maybe either someone lied to you about the calibration or something because Pro M is about the Best.

I bought mine from the guy who makes Dense air chargers(cai) I'LL have to wait till Monday to get some advice from him.He used it on his stang,and its the same as mine.93lx stock cam,heads.

 

[5.0Droptop]

I bought mine from the guy who makes Dense air chargers(cai) I'LL have to wait till Monday to get some advice from him.He used it on his stang,and its the same as mine.93lx stock cam,heads.

Yeah find out for sure if its 19# 24# or what it is The calibration may be incorrect for your cars injectors.

 

[5.0Droptop]

The more air you put into the system the leaner the system gets Therefore you must add fuel to keep it from pinging, That is why a AFPR is a must as you start adding mods to your 5.0

 

[willys1]

Yeah find out for sure if its 19# 24# or what it is The calibration may be incorrect for your cars injectors.

I got the final production test sheet rite in front of me./meter tested--75mm,19elbow /serial number ##### /injector curve 19 !!!! So I think its the rite one.

 

[PRO50SC]

No..... more like some one who knows what hes doing. I think you need to find out for sure what your Pro M is calibrated at. Check your fuel pressure and timing etc.

It's calibrated for 19lb injectors and the timing and f/p is at spec. I'm gonna send it back and have them recheck the calibration.

 

[5.0Droptop]

Have you tried cleaning the meter wires Sometimes they get dirty from stuff like K&N Filters Oil and stuff like that

 

[5.0Droptop]

It's calibrated for 19lb injectors and the timing and f/p is at spec. I'm gonna send it back and have them recheck the calibration.

I cant blame you there, It could have been dropped or anything who knows.

 

[willys1]

The more air you put into the system the leaner the system gets Therefore you must add fuel to keep it from pinging, That is why a AFPR is a must as you start adding mods to your 5.0

Whats a AFPR ??

 

[IndyBlk5.0]

5.0droptop is the pimp at pro-m meters, i suggest you listen to him

 

[5.0Droptop]

Whats a AFPR ??

Adjustable Fuel Pressure Regulater

 

[5.0Droptop]

5.0droptop is the pimp at pro-m meters, i suggest you listen to him

Oh please.....I am just tryn to help him out.

 

[IndyBlk5.0]

Adjustable Fuel Pressure Regulator. This allows you to control how much fuel you are putting into your engine. To be truely affective, you need to have a fuel pressure gauge which can be easily be mounted onto your shrader valve on your stock fuel rail. This is a must for doing future mods on your car, because tuning is always an issue...

 

[willys1]

Adjustable Fuel Pressure Regulater

Now where getting somewhere,no one told me I had to screw with this.Is it mandatory?If so where is it,and how do you do it?

 

[IndyBlk5.0]

You do not have an adjustable fuel pressure regulator on your stock stang, you have to buy one, kirban is a good brand and ive had no problems with it. If you want a ballpark way of seeing if you are running lean or rich, pull some codes with a code scanner and see what your o2 sensors have to say.

 

[5.0Droptop]

Now where getting somewhere,no one told me I had to screw with this.Is it mandatory?If so where is it,and how do you do it?

You can buy a AFPR via summit or jegs or ebay or??? Same goes for the Fuel rail guage. If you have bumped your timing up beyond 10* and added headers,Exhaust, cold air intake etc etc your probably getting lean. If you hear PING that means its going lean up top. Ping is bad. First sign you need more fuel.

 

[5.0Droptop]

Oh as for installing a AFPR... Its not hard, The fuel press regulater is right next to the egr valve, it has a vacumme hose going to it. It has 3 small screws that attach it to the fuel rail, You will want to bleed the press off the rail and the remove the screws install new one in reverse order. I would also add the Fuel press Guage to the rail like Indy50 said.

 

[willys1]

If I get a pressure gauge,what is the stock preesure,and what should I set it to?

 

[5.0Droptop]

AFPR http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33553&item=2456419647

THE GUAGE I USE http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&category=33553&item=2445171695

 

[5.0Droptop]

If I get a pressure gauge,what is the stock preesure,and what should I set it to?

Stock pressure for bone stock motor is 35-38 psi...If you have bumped timing and added a few mods youll probably want to set it to 40-42 psi to start. These settings are with out the vacume line plugged into the regulator. If you set it with the vac line off, then connect the line youll notice on the gauge that the press will drop... taking the vac line off simulates wide open throttle.