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Topic: any ideas ? (Read 3457 times) previous topic - next topic

any ideas ?

i have a 87 cougar , has a 85 gt roller motor, heads have had larger valves installed and some porting(dont know exact work on heads ,were free,had a bent valve-long story)  cam came with heads dont know exact grind , but was told it was like x303 1.6 roller rockers,mass air flow for 30lbs injectors,(bbk)bbk intake (upper/lower)70 mm throttle body,30 psi injectors, processor is from 93 cobra ,tfi module has been replaced,pick up coil(in dist)coil and new high performance ford wires(8mm)  my issue is it some what runs under heavy throttle but runs very rich to the point of fuel fouling plugs , i have been told its the processor , its the cam ect --what would be a good processor or cam?:rollin:

any ideas ?

Reply #1 –
What transmission? An X303 (if there is such a thing? I was only aware of the B, E and F cams) does NOT like an auto trans, but of course, running rich ain't got squat to do with that anyway...

Of course, it could be those 30 psi injectors....you need to exchange them for some 24 lb/hour injectors....that's what the Cobra 5.0 engines had.
'98 Explorer 5.0
'20 Malibu (I know, Chevy, but, 35MPG. Let's go brandon, eh)

any ideas ?

Reply #2 –
its a t5 had 24s had same issue , i have turbos ready to go on it , except i want it running correctly before they go back , running stock shorties and hollow cats now.

any ideas ?

Reply #3 –
get a tune


whats your fuel pressure at ?

any ideas ?

Reply #4 –
40 psi running have gauge attached to fuel line

any ideas ?

Reply #5 –
the processor tells the injectors when to spray ,and in what order, this cam uses HO(13726548) firing order,the cobra processor also correct? i was also told that cobra processor would not work with a mass air other than a cobra mass air , is this true , that would cause a rich condition.

any ideas ?

Reply #6 –
If you are using the actual Cobra processor, you also need to use the Cobra specific maf sensor and the matching fuel injectors(yes it is true). FRPP made a X303 cam it was one of the higher end alphabet cams. You could always benefit from a tune, but if you match everything up together it will atleast get you going.
Donnie
10 Second NA TBird
Fredericksburg Va

any ideas ?

Reply #7 –
The fellers are correct on the Cobra EEC, injectors and MAF. Maf has to be calibrated for injectors being used, regardless of what vehicle they're in.

But to get you in the ball park, things need to be on the same page.
'98 Explorer 5.0
'20 Malibu (I know, Chevy, but, 35MPG. Let's go brandon, eh)

any ideas ?

Reply #8 –
Dump the Cobra processor (post it for sale on the Mustang forums) and find a 9AL (originally came in the standard trans cars) or 9AP (originally came in the auto trans cars) processor and get an MAF (http://www.promracing.com/mass-air-meters.html) that is calibrated for your 30 lb/hr injectors if you do not want to get a tune right away.  If you are going to get a tune now and one later when you put the turbos in then then I would suggest a Lightning 90mm MAF or one from SCT (http://www.sctflash.com/showsctproducts.php?Prod=BA).

This is are really good read on EEC's and their wiring on the Corral:

http://forums.corral.net/forums/general-mustang-tech/1094179-oxygen-sensor-harnesses-manual-auto-differences-year-differences.html

Darren

83 351W TKO'd T-Bird on the bottle


93 331 Mustang Coupe - 368 rwhp

any ideas ?

Reply #10 –
I have a A9L with a MAF calibrated to 24lb injectors and my car still runs rich. But I am running a 351w now so I know it needs a tune bad.
1988 Thunderbird Sport. Work in Progress
5.8L swap w/fitech efi, 4R70W swap w/quick 4 controller, 2003 GT rear diff, 5 Lug swap

Bought this car back as an old project car.

:burnout:

any ideas ?

Reply #11 –
Quote from: 86caprirs;417238
I have a A9L with a MAF calibrated to 24lb injectors and my car still runs rich. But I am running a 351w now so I know it needs a tune bad.
Yes sir...

That would be a good thing...

Travis

any ideas ?

Reply #12 –
Ditch the C&L and get a better MAF. If anything you should be lean with the 24's on a mild 351.

Darren

83 351W TKO'd T-Bird on the bottle


93 331 Mustang Coupe - 368 rwhp

any ideas ?

Reply #13 –
sounds like i have a cobra processor for sale cheap.whats the best year for a 9al ?
 

any ideas ?

Reply #14 –
what is a "tune"i dont have a chip