The end of the fuel rail.

 

I'll be honest and say that I was aiming more towards a PSI goal and not a HP one. I hadn't heard of anyone losing an engine on sub-15PSI on 93 I realize this may have been the incorrect way of looking at this. There seems to be a number of potential variables as well. The word I got was the the dyno in question was set to read more like a Dynojet which is where I got the idea that the dyno was reading high.

Either way, I lost my engine and even if I don't get insight into it, maybe someone else later can get insight before they lose their engine, whether it be not aiming for such high numbers or making sure timing was sync'd correctly. I sourced a lower mileage (55k miles compared to my 127k, albeit my engine had perfect leaks own results for its age) long block that will be installed this week, with a different tuner coming down from out of state that has luck with several s2ks. Whether it was engine malfunction, or tuner error, I may never know. Hopefully everything goes better this time around.

 

It seems pretty ridiculous to me for people to just start throwing assumptions out here on what caused the failure. Especially considering how little actual evidence has been shown.

Sorry for the loss man, hopefully you get it all squared away.

 

The end of the fuel rail.
[/quote]

Thats where i have my AEM 0-100psi sensor and its bounces all over when under normal driving conditions. it will read a steady 43.5psi when the pump primes and if i let of the gas completely on decel.

My anolog gauge on the rail is reading steady pressure though, so i trust that.

Its been hard to find anymore information on this or if this is normal?

Sorry for the thread jack guys but ive searched with no results. Plus, boostedf22c is the AEM King!

 

The end of the fuel rail.
[/quote]

Thats where i have my AEM 0-100psi sensor and its bounces all over when under normal driving conditions. it will read a steady 43.5psi when the pump primes and if i let of the gas completely on decel.

My anolog gauge on the rail is reading steady pressure though, so i trust that.

Its been hard to find anymore information on this or if this is normal?

Sorry for the thread jack guys but ive searched with no results. Plus, boostedf22c is the AEM King!
[/quote]

My sensor is in the same place and does the same thing.



Are you using the stock FPR? I believe that's part of my problem.

 

The end of the fuel rail.
[/quote]

Thats where i have my AEM 0-100psi sensor and its bounces all over when under normal driving conditions. it will read a steady 43.5psi when the pump primes and if i let of the gas completely on decel.

My anolog gauge on the rail is reading steady pressure though, so i trust that.

Its been hard to find anymore information on this or if this is normal?

Sorry for the thread jack guys but ive searched with no results. Plus, boostedf22c is the AEM King!
[/quote]

My sensor is in the same place and does the same thing.



Are you using the stock FPR? I believe that's part of my problem.
[/quote]

I am using AEM FPR on the AEM fuel rail at stock base pressure. stock fuel lines, ID2000 injectors and walbro 485 just to be specific.

I really want to log fuel pressure and set some saftey parameters but its hard to do when i get speratic readings from 25psi - 80psi.

 

This pump gas is making me nervous.. I'm on 385hp to the hubs at 7psi on 91.. I have 6266BB and my tuner wants to get me into 500hp at 12-14psi on 91. He also plans On doing a 2-3mm hg to run more boost. Btw this guy also own a 600hp+ with hg done and I think makes 700whp+ on e85

 

Risky. If it were me I wouldn't go with a thicker hg, just asking for a hg failure there, and I wouldn't go more then -10-12psi on 91. Your turbo obviously flows great in the upper range so you already are getting thr benefit of a higher then typical hp for your price to pay, and yeah its laggy too im sure at 7psi, but id be mindful with that piss. If E85 isn't available, id consider a good water/meth injection system with a fail safe provision to save you if the injection system fails. There is some great possibilities out there to utilize, if your tuner is worth two shits, he knows how to set you up with something. I put together a very simple but effective multiport system with a friend.

A single port pre TB is great for primarily AIT cooling and some added power due to the denser charge, but the multi port is where you can really crank up the power due to a much more safe/even distribution of injection for each cylinder via intake runner.

 

Back in 08-09 we ran a simple off the shelf AEM single nozzle water/meth 50/50 system and pump gas. Made 700whp and the car ran 9.9@141.

Ran that system for 2 years with no issues.

FWIW.

 

Let's not forget that 400whp on a dynojet is different than 400whp on a mustang dyno or any other dyno as well. !! More things to argue about!