Build Question

Fuzion · Aug 27, 2008

I'm in the process of getting my mustang back together and better than ever. I am going to be running the normal trick flow top end street kit keeping all smog stuff on. My question:

I'll be running a 70mm tb, 80mm mas air, 255lph fuel pump and a 30lb injectors. Should I spend money on a fuel pressure regulator or get a new harmonic balancer instead?

Which do you guys feel is more important? Or are both an absolute must? Could money be spent else where for better results?

Thx in advance

backfocus · Aug 28, 2008

It would depend on how many miles you have on the car. Personally, I would do both, but if the car is lower miles and with a good inspection of the balancer you could reuse it for awhile.

Fuzion · Aug 28, 2008

Backfocus, the car ran flawlessly before began to take it apart. I had it dyno'ed and the air fuel curve was right where it was suppose to be. The car has about 107k.

My understanding so far is that the stock fuel pressure provides sufficient pressure to run the trick flow package without any tuning problems. Right?

I'm thinking on replacing the balancer to be safe. Any recommendations, I see on summit that the price range is ridiculous. Would a stock replacement for $70 be alright? Or is there a major benefit to upgrade to a huge aftermarket unit? Thanks again.

86bluecobra · Aug 28, 2008

If I was going to buy a new balancer I would make sure it had an SFI rating. Don't go with a fluid style.

Fuzion · Aug 28, 2008

86bluecobra said:
If I was going to buy a new balancer I would make sure it had an SFI rating. Don't go with a fluid style.

Yea, i agree with you. i was thinking about buying a stock replacement, but with the price differences i'm wonding why other balancers are so expensive.

Harmonic Balancers - summitracing.com

check out this listing from summit racing, stock is on top.

86bluecobra · Aug 28, 2008

that is quite the price range. There is a summit SFI one for 145 bucks. Never had any experience with it however so I would,t want to give my opinion on it.

backfocus · Aug 28, 2008

You might be alright with the stock regulator, but since you are going with 30s, I would want to be able to adjust it better.

As for the balancer I have heard good things about the Pioneer units and the Professional Products units, but I would go with a SFI approved unit no matter what, just for the assurance, if any thing.

Fuzion · Aug 28, 2008

I'm continuing to research further into this subject. Today I ran into a thread that a member stated that an adjustable fuel pressure regulator is a worthless mod. Supposedly the computer will eventually learn the new fuel pressure setting and change the air fuel ratio accordingly to what it deems as correct. The only true way to change the air fuel ratio permanently is with a custom chip.

Now how true is this statement?

And if I do plan on having my car dyno tuned and chipped will the tuner need to adjust fuel pressure?

thank again :SNSign:

backfocus · Aug 29, 2008

Fuzion, I know that this has been debated on here several times and I do agree with your findings, about the computer adjusting the fuel, but I don't think it does upon start up. I figured you were getting a tune or at least I would strongly suggest it with using the bigger 30lb injectors.

My old setup was with 24lbers and the trickflow High ports and it always ran a little rich, that was with the stock regulator. I don't have my new setup running yet, but I did go with an adjustable, but I will also have a turbo and a tuner.

I think Jlinker as a writeup about the computer fuel adjustment somewhere. If not try fordfuelinjection.com

Fuzion · Aug 29, 2008

backfocus said:
Fuzion, I know that this has been debated on here several times and I do agree with your findings, about the computer adjusting the fuel, but I don't think it does upon start up. I figured you were getting a tune or at least I would strongly suggest it with using the bigger 30lb injectors.

My old setup was with 24lbers and the trickflow High ports and it always ran a little rich, that was with the stock regulator. I don't have my new setup running yet, but I did go with an adjustable, but I will also have a turbo and a tuner.

I think Jlinker as a writeup about the computer fuel adjustment somewhere. If not try fordfuelinjection.com

thanks for your help. I'm going to hold of from buying either and see how the car runs. Once im in the market for tuning and all i'll see what the tuner suggests.

I can't wait to start breaking into this thing. just received my 3g alternator and im starting to clean up the engine bay this weekend.

Im going to have to start my own progress thread stangnet style soon.
thanks again

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