Just a piece of advice:

Don't install an AFPR unless you need to adjust the pressure. I installed one quite a while back and set it at stock 43.5 pending future mods. Unfortunately, it somehow moved on its own and I was seeing very rich conditions. I had it checked and it was at 59# of line pressure.

 

The adjustable fuel pressure regulators don't have a very good track record with the LT1s.

 

What brand was your AFPR?

 

You sure an LS1 guy hasn't been working on your car?

 

I've been running a TPIS AFPR for close to 8 years with no drift issues. I have a fuel pressure gauge mounted to my A-pillar so I monitor fuel pressure on a regular basis.

 

My Weldon AFPR has been holding the same 58psi pressure for over 6 years now..... I'm just curious if Ultra Dog's was a brand "A" AFPR??????

 

Just how would a fuel pressure regulator fail and cause high pressure?

There are two moving parts in the regulator; the spring and the diaphragm/ball assembly.

If the diaphragm were to fail the fuel would enter the intake via the reference line which would be immediately noticeable via the flooded engine.

If the spring were to fail, which is extremely unlikely due to the short travel required to regulate pressure and the heat treat done to the springs, the pressure would drop as the diaphragm would be able to move unimpeded.

I have never seen a screw get tighter on anything due to vibration. There is quite a bit of resistance on the adjustment. It would have had to be adjusted by human hands, or the return line has been pinched somehow. If that's the case he won't be able to back it back down.

Still think the Aeromotive regulators fail Injuneer? I thought that was dealt with a long time ago on here. 13 old style regulators replaced at no charge due to fuel eating the diaphragm material. Not too bad considering the hundreds (thousands?) in service in the field.

 

I still see threads about people having problems with Aeromotive AFPRs.

 

No.... I don't "think" the Aeromotive AFPR's fail.... I "know" they fail at a ridiculously high rate, compared to other brands. The problems haven't stopped. They are reported monthly on these forums and others. I don't make this stuff up. I just "observe".

Apparently you still owe your allegiance to Aeromotive.... and its still clouding your objectivity.

 

I hardly think you're in any position to evalute a manufactuers defective rate, but its interesting.

Most of the posts I found were related to pressure maintenence at shut down.

I did find several where you made sure to disparage on the product, even if you weren't sure the brand was in use. You also several times said I joined up and chewed your a$$ (your words) for saying that the product was defective.

Fred, the product works well. The very few individuals that have had problems are of less percentange than the competing fuel system manufactuers, that's a fact and covered by a good warranty. You have no clue on the sales volumes, nor should you.

You don't see a lot of random posts on products that work as they should, that's human nature.

The fact that you aren't privy to anything outside your internet world and maybe that of your favorite local shop implys your slam campaign is baseless.

I also look around here for representatives of other aftermarket companies and don't see any, save for some "tuners" or speed shops.
I've moved on from Aeromotive but I wonder to myself why other manufactuers don't participate. I think I know why.


I love ya, but please drop it.

Mark

 

Yes, people complain when things don't work and you hardly ever hear from them when things work well. Still, I don't know that I can remember a complaint about an AFPR that was not the Aeromotive brand. Obviously, they are not all bad.

 

I think its probably because until recently there weren't really any other options besides the SLP modification kit to the factory regulator. Holley has one now, so does Doug Rippie but those weren't available until recently. LT1 being somewhat of a small market for AFPR.

 

The TPIS unit has been around for many years and myself and 2 local friends have been very happy with the product. One of the friends had to switch from a faulty Aeromotive AFPR. Yes this is a very small sample, but as a 8+ year reader/poster to this forum, I don't recall any other brand other than Aeromotive getting complaints.

 

I have a aeromotive but it is an external regulator...I had the metco vefore that for6-7 years no problems

 

Mark..... you can sugar coat it all you want. There are REPEATED posts on these forums and other LT1 forums regarding problems with the Aeromotive LT1 AFPR. The latest ones are two cases of failure to supply the required parts to install the LT1 AFPR correctly.

Yes, Aeromotive sent you here to defend their product. You insisted there were NO problems. Then you criticized me, because in your opinion, a MODERATOR has no right talking bad about someone's products. You launched a personal attack on me and my integrity. The people who know me, and have taken the time to read what I post with an open mind know.... I call 'em the way I see them, with no personal bias. You feel otherwise, and apparently you are still harboring a grudge..... even though I don't think you even work for Aeromotive any more. I also harbor hard feelings, because of your personal attack on me.

Then, in the same post, after insisiting there were no problemswith the AFPR, you admitted there were problems with them in 2002, because Aeromotive had failed to recognize the changes in the composition of gasoline, and had not updated the materials of construction. Were there no problems..... or were there problems with defective materials of construction? You stated both in the same post. Then you offered to replace free, no questions asked, ANY Aeromotive AFPR with problems...... but of course in your mind, there were no problems. Its called "being in denial".

I'll "drop it" when the Aeromotive AFPR no longer pops up regularly as a "problem.