4 link, ORI's, narrowed D60w/only 2.5" lift, 5"+WB stretch, 2" floor lower, P/S....,

[nvrstuk]

My tuner FINALLY got in touch with me last night about midnight his time. He said he would look at my 4 datalogs I sent him almost 3 weeks ago and he contacted me this am and said "drive it".

So I put a bunch of 92 octane in and did just that. Took it for a couple hard data logs and have a pretty good bog at 4500 rpm then takes off like a bullet again after that hesitation. Had it before but not nearly as noticeable so we gotta figure this out. I'm sure I'll get to try all kinds of things ...

Hey. cool….the Hobie in the middle with 2 blue stripes is a twin to mine. The multicolor further out behind it was called a Tequila Sunrise Oops…after looking back it’s called Cat Fever. One of the reasons I haven’t slalomed in decades. Haven’t sailed for quite a few years either. A couple of us used to go out, each sailing solo but I wouldn’t trust myself doing it now.

blatantly stolen from me. https://classicbroncos.com/forums/account/th-attachment-manager/878152/view

What a cool pic!! Is that you back in the day???

 

[ssray]

What a cool pic!! Is that you back in the day???

Yep….Brother on the right and his boy in the middle. 20~ yrs ago. Looks to be a slower day at Harlan Co Lake.

Good to hear your cruzin again…that’s a long wait.

 

[nvrstuk]

Always fun to see the old pics!

Thx for the good cheer on my rig f i n a l l y running!! Chirping just a little rubber almost every shift into second at 5 mph.

 

[Yeller]

Nice

 

[broncoitis]

Great looking build you have going. Assume that the tires in the pic are 40's? Great job and gonna link mine as well in the back eventually. Keep the info coming have enjoyed the build

 

[nvrstuk]

So, 4 FULL days and no response from the tuner (again). Tell me you don't have time or do the tune! Don't keep a paid up customer locked up in the dark waiting for what???

Sorry for the rant all but... not being able to spin over 4K is frustrating since my A9l is wrapped up in a cloth on the "bottom" of the dash with the glovebox removed.

I would have already ordered the ProM if it didn't take them 6 weeks for the custom harness.

 

[ntsqd]

Time to go Haltech or Motec and get a real proformance ECU that you can program.

 

[nvrstuk]

I need something.

I really don't want to learn to be a tuner-just don't. I pay a tuner to tune and it's a service.

This is why ProM sounds so good. 2020 Mustang controller sounds good too.

I sent the guy 2 text msgs, one voice mail and 2 msgs on the "Tuning forum" he has.

I will do the same tomorrow. I am rapidly running out of time due to other issue and I let him know this today!

Then I will have to post something again on Corral to get him to contact me.

Shouldn't have to do this tho.

Here's a video of me taking g it over 5K so the tuner could see that the bog is there and the fuel pressure is constant.


Something about jerry-rigging 6mm ARB hose out under the fender and duct taping it to the tach ao I could read the fuel rail pressure while accelerating (not hard) in 2nd gear made me pack 2 additional fire extinguishers with the pins pulled laying right next to me and not buckling up my belt either.

BTW, I hate the worthless fuel gauge also-so difficult to read. Sure didn't look like that in the picture when I bought it.

 

[ntsqd]

I have two Autometer electronic FP gauges that I can send you. I didn't trust either of them, but I think that it might have been my faulty expectation that the FP would be static if all was well when that isn't the case. The Blanc-oh! was having a severe loss of power issue and Lars suggested that I should probably be able to monitor that since there is a 408 waiting to go in it. Since the only pillar pod I found was a two gauge pod I've left the IssPro FP gauge in place and put an IssPro trans temp gauge in with it.

 

[nvrstuk]

PM'd ya TC!

 

[nvrstuk]

Good news finally... I reread the last 10 posts and what a downer thread! lol

Good news is I ran through my first full tank of gas since September! Tuning, idling and not running real easy I burned 17.1 gal in 151 miles. Think new math got me 8.8mpg.

Let's see, since Wa State now has the highest gas prices in the entire US and we're averaging about $1.48gal above the national average I figure I'll be dumping about $400/month just chasing around town.

 

[nvrstuk]

I have two Autometer electronic FP gauges that I can send you. I didn't trust either of them, but I think that it might have been my faulty expectation that the FP would be static if all was well when that isn't the case. The Blanc-oh! was having a severe loss of power issue and Lars suggested that I should probably be able to monitor that since there is a 408 waiting to go in it. Since the only pillar pod I found was a two gauge pod I've left the IssPro FP gauge in place and put an IssPro trans temp gauge in with it.

I was surprised that the pressure dropped so much when decelerating! 10psi drop when vacuum is max. Only had 6.25" of vacuum at idle with my old cam.

 

[.94 OR]

I was surprised that the pressure dropped so much when decelerating! 10psi drop when vacuum is max. Only had 6.25" of vacuum at idle with my old cam.

I'm curious why you are surprised. There is no demand for fuel in the "carb" at that time so there shouldn't be any reason to supply full pressure/volume.

 

[nvrstuk]

Unlike a carb that regulates it's fuel supply ALMOST totally on vacuum an efi system does not. Just needs enough to pull the air/fuel charge past the intake.

Injectors are "told" when to let fuel in by the ecu (several other factors) of course but when the TPS says through low voltage not to open and let fuel in its not vacuum dependant-they just shut and don't care if there's 10# or 60#'s of fuel pressure against them and it doesn't cause any issues.

That's why I was wondering.

I am still wondering how there's not a micro-second lag between completely coming off the pedal and full mash of the pedal a split second later when you are 10# (or more) lower pressure in the rails as the injectors can't supply the same amount of fuel in that instant the pedal is fully depressed with 25% or less pressure than it normally runs at.

I don't notice it but I'm sure the engineers designing the ecu's have looked at it.

 

[ntsqd]

I note that the various regulators used on LS swaps may have a vacuum port, but they are not connected to manifold vacuum. In my limited searches I've yet to see one connected to anything.

I suspect that the vacuum reference is left over from the days of fairly narrow operating band injectors. They couldn't "throttle-down" low enough for a stable idle so reducing the fuel pressure was a method to over-come that.

 

[nvrstuk]

Could be, I have no idea!

 

[ntsqd]

I've no idea either, but it's at least logical and is one possible deductive reasoning conclusion.

 

[nvrstuk]

I like it!

 

[ssray]

Interesting…Ive had the impression that fuel pressure was set at a specific psi but I have seen somewhere about running a bit higher pressure to cheat when the flow rate was a bit short for a particular set of injectors. Keep from buying the next step up in flow rate. I think it might of related to guys that were racing the Buick turbos on E85 which needs higher flow rates. Kinda makes you wonder how it’s handled in the higher flow rate injectors being used in boosted conditions. When idling they still need a lower rate equivalent to a na engine. I know there are upper limits on the duration of an injector pulse and I assume that relates to engine rpm. At high rpm there’s a shorter time to get the fuel in and yet it’s also when the most fuel is needed. Don’t really know about the factors in how low a duration an injector can handle. An then Ive read about diesels that may use multiple pulses in one stroke to optimize combustion. Hard to understand how that can be done that fast!

 

[ntsqd]

With higher pressure you get better atomization across the whole pulse-width spectrum, but if the low limit of pulse-width for an injector is still too much fuel and a lower flow rate injector won't allow the desired top-end performance then lowering the fuel pressure will reduce the amount of fuel injected at the low limit pulse. Typically the atomization will suffer, but there is a little 'time' to try to deal with it. One of the advantages of some turbulence in the combustion chamber. It's not ideal, but it looks like it works. I'm sure that it causes the OEM Emissions Compliance guys all sorts of heart-burn.
At least that's my partly edumacated supposition.

In the olden days some would use the cold engine "choke" injector to add supplemental fuel by adding a boost or WOT sensitive controller to it. My '88 4rnnr 3.0L V6 has this 7th injector, but anyone who boosts one of those engines deserves everything they're going to get.