JimMueller

iTrader: (9)

I'm adding a Autometer 2246 to my fuel rail and will plumb it into my old EGR harness so I can scan fuel pressure. But I'd also like the ability for shops to use a traditional fuel pressure gauge without disconnecting the 2246 from the fuel rail.

I'm looking for something like this part, except which adds a T-splitter with a normal Schrader valve insert so I could hook up a traditional fuel pressure gauge to it.

http://www.summitracing.com/parts/CEI-107133/

Does anyone know where I could find such an adapter? When I spoke with Caspers they indicated they didn't offer such an adapter.

JimMueller

iTrader: (9)

I didn't locate a T-splitter so I finally completed the install this morning. On a 2nd gear WOT pull, fuel pressure dropped to the lower 50's even though at cruise it was typically 59-60psi. Is that normal behavior or do I have something I need to address? I've already cleaned the fuel injectors, replaced the fuel filter, and add a bottle of Techron Concentrate Plus to the fuel tank at every oil change.

Fat Jesus 808

iTrader: (5)

Thats what mine did with a 255. like 62ish at idle, and mid low 50s wot. now with a 450 and hotwire, I see 70+ at idle as I suspect the stock reg cant bypass enough fuel, but at wot it drop back to the same

JimMueller

iTrader: (9)

I have the Racetronix 255 kit with hotwire already. If this is a concern, how should I address it?

Fat Jesus 808

iTrader: (5)

If it doesnt change at wot, i dont think its an issue. Could always try adding fuel at wot and relogging. seeing if duty goes up, pressures holds and afr drops. if pressure holds under that, id say its ok

JimMueller

iTrader: (9)

I'm confused.... the photo of the log in the first post shows that PSI is dropping from 60 to low 50's at WOT. Adding more fuel at WOT is going to raise the PSI?

Fat Jesus 808

iTrader: (5)

At cruising speeds and idle, a hot wired pump may flow more than the stock regulator can bypass to keep pressure under control. my 450 used to make 62psi at idle, and low 50s at wot. now with a hot wire kit, it makes 72 at idle, and same low 50s at wot.

JimMueller

iTrader: (9)

So I'm looking for a consensus; am I okay to leave it as-is, or is there a concern with the above behavior? If there is a concern, what steps do I take to resolve that concern?

Fat Jesus 808

iTrader: (5)

Thats why I suggested to add fuel and see if at wot the pressure stays the same or drops more. if it stays at the same pressure at wot even richer, id say its fine