New fuel pin, new issue

[theoldmanW350]

Hello all. I recently installed a M2 fuel pin. On hills the old man has no push. I gotta get into the gas pedal way more than I had to with the stock pin. With my recently installed 2nd gen IC and the fact that I still run the baby H1c be the culprit? I'm thinking perhaps I need to adjust the star wheel and smoke screw? Or perhaps the baby H1c just isn't pushing the amount of air needed. Though I've read the workings of the VE pump the adjustments leave me a bit bewildered particularly the starwheel and smoke screw. I've read these two adjustments are the start, before turning the full power screw. Any thoughts are appreciated. Thanks.

[ellis93]

That pin will be a lag monster if they smoke screw isn't turned in about 2 or 3 turns with stock fuel,and you'll need to drop the star wheel about the same distance.......BTDT

FYI I wound up removing mine after adding fuel and bigger injectors. I could not tune out low speed smoke after those with the pin.

[theoldmanW350]

I see. What I know is the PO had 40 over injectors thrown in. The old man did smoke some especially at low speed/boost with the original pin. When I installed the new pin the diaphragm was thoroughly seated. I had to peel it off the pump so I don't think he rotated the pin. The PO only owned it for about a year. I removed the smoke screw cap and it seems it had never been removed. It was really in there so I'm not sure of he tuned the smoke screw and/or the starwheel. I can only assume he installed the injectors with no further tuning. The old man still spews a haze at low speed/boost with the new pin. Are 40 over injectors "big" injectors? The PO gave me the originals. I'll follow your advice and turn down the smoke screw and starwheel in increments. Is the smoke screw cap a source of boost leak? Can I leave it off? Wish me luck.

[RCCUMMINS89]

40 over injectors are actually quite small... but they are usually the marine injectors that most call "40 overs"

[theoldmanW350]

Removing an injector just to have a look for a part number or a makers mark has been one of those "on my to do list" if only to give myself a lesson so I'm not so damn nervous about it. I got the starwheel down 2 turns and can feel a difference for sure. I gotta buy a torx for the smoke screw tomorrow. Good advice ellis, thanks. Just the starwheel alleviated some of the idle smoke. I for the first time got on a flat stretch of road and did a WOT run. I suppose I understand what turbo lag is now. I get my foot into it and a 3 count later the old man takes off, boost climbs to a steady 23-25 and I'm doing 80. That M2 fuel pin has a nice response up top. Is the 18cm turbine housing causing the lag?

[cougar]

"On hills the old man has no push"
You may want to consider replacing or upgrading your lift pump. A worn stock pump won't keep up with a stock engine, much less any kind of fueling upgrades. A new stock lift pump falls flat rapidly with any kind of fueling mods. A low pressure piston lift pump is a very good place to start.

[theoldmanW350]

I've had the smoke screw turned down two turns for two weeks or so and that coupled with the starwheel has made the truck feel as though I never changed the fuel pin. An upgraded lift pump has been on my mind, but I want to get an upgrade on the turbo first. Not sure if I'll ever touch the fuel screw (I may eat those words in the future). I will lose MPG's with a turn or two in right? I should re-visit the thread about mpg's and fuel mods. On second thought just installing a new stock lift pump is a good lesson for a newbie like me.

[DMan1198]

You won't lose mileage unless you doing a lot of speed changes where you accelerate (with more power you can accelerate quicker hence loss of mileage) maintaining speed on the other hand won't use any more fuel than you're already using

[DodgeFreak]

I've had the smoke screw turned down two turns for two weeks or so and that coupled with the starwheel has made the truck feel as though I never changed the fuel pin. An upgraded lift pump has been on my mind, but I want to get an upgrade on the turbo first. Not sure if I'll ever touch the fuel screw (I may eat those words in the future). I will lose MPG's with a turn or two in right? I should re-visit the thread about mpg's and fuel mods. On second thought just installing a new stock lift pump is a good lesson for a newbie like me.

I would do Lift pump before turbo. I would put a gauge on it and make sure you aren't sucking the fuel psi to 0 on an wot run. I would do supporting mods first then go fast goodies.