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Locoharleyman

As always, more power HELP!

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Ok, my trooper has always had a dead spot coming into second and third gear acting like a fuel hesitation since I had bought it. It had got worse to the point it quit running altogether, I replaced the fuel line, filter, pump and regulator and now have consistent fuel pressure (45lbs) but still have that hesitation going into higher gear. I would like also to have a lot more lower end torque as most of my riding is trail, mud and hill climb, not going fast. I have read several of the threads on the fuel controller and AFR wide band system and looking to add that to my wish list. I am switching to Iridium plugs. Any other suggestions?

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The fuel controller is what you want. An AFR isn't necessary, but a nicety.

You can port match your intake & exhaust. All other power upgrades (turbo, head work) start getting expensive.

I built an air filter that pulls are from the cab with a nice big k&n. I also have the fuel controller. I am pretty happy with the power for the money I spent.

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Ya my set up is close to two scoops and it does pretty well. Two scoops what setting are you using on your fuel controller

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I agreed with 2scoops better air I also have the fuel controller but I also have difference cams in mine. And I just bought a intake piece it will be a direct bolt on it will bring the throttle body up on top and throttle body and your intake manfold bolts to it. And you get rid of that flex piping.

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I agreed with 2scoops better air I also have the fuel controller but I also have difference cams in mine. And I just bought a intake piece it will be a direct bolt on it will bring the throttle body up on top. And throttle body and your intake manfold bolts to it. And you get rid of that flex piping.

post-178-0-18893700-1400034614_thumb.jpg

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Great news, ordering my controller tomorrow and gonna do some aggressive fuel system cleanse. The guy at SB had said something about maybe moving the fuel filter to the downstream of the pump? I am going to upsize my snorkel to 3" from 2" and add the controller. Thanks guys for all your help and will probably have more questions once I install the controller. BTW the 30" tires are awesome and give me the ground clearance I needed.

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Easiest way to get a lot of extra power is to clean up and match the intake and exhaust ports. They mismatch by 1/4" in places. Huge interruption to efficient air flow. Probably a good 10 to 15 HP available there. By far the best and cheapest way to add power. Just reading your fuel pressure when idling isn't good enough. Move your gauge so you can see it while driving and then see if the pressure remains steady. An accumulator on the outlet side of the fuel pump will steady the fuel pressure. Actually the fuel regulator should be on the far end of the fuel rail also.

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I talked to silver bullet and he wants $286 for a controller, does that sound right? I also have found a huge voltage variance feeding my fuel pump causing it to loose pressure, chasing wires now :(

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I have not messed with my fuel controller settings. It seems to work great out of the box.

Plumber, let me know how the intake works out. I'd be interested. Is it different from just flipping your stock intake? I'd be interested in how the ports match up as well.

$265 sounds about right. I think he was asking $400 at one time. How much are they if you by straight from Dobeck?

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I have found the best thing I bought for my trooper was a air fuel ratio gauge along with the fuel controller silver bullet sells. You can then set it exactly where it needs to be. By the way I have a turbo setup on my trooper. 6 lbs. boost no intercooler. Best money I ever spent on this. I got my kit from http://www.klung-motor.com/Accessories.asp?smallclass=Turbo kit and ECU&bigclass=Accessories&page=2. I didn't use the ecu that came with the kit. Too complicated for me. The increase in torque was amazing. I have 30 inch mud lites, no shortage of power to turn them in the mud. I try to post pics. Haven't figured that one out yet.

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I have not messed with my fuel controller settings. It seems to work great out of the box.

Plumber, let me know how the intake works out. I'd be interested. Is it different from just flipping your stock intake? I'd be interested in how the ports match up as well.

$265 sounds about right. I think he was asking $400 at one time. How much are they if you by straight from Dobeck?

2scoops, That intake is what all sqr472 engine uses but the trooper. Yes I think it will be better longer tubes and it will pull the air down instead of pulling it up and your throttle body will be out of the mud. I'll let you know when I get it hook up. .

. .

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Just a couple of pics. The turbo header I had to modify slightly because the turbo would have to be mounted backwards from clearance issues. Just a slight cut and weld to angle the turbo down and all is good. The other pic is my custom oil pan. 7 L capacity. Thought the engine oil was running too hot, but turned out to be oil gauge problem when hot. Factory gauge and sender is crap. I prefer this driveline setup compared to a belt drive any day, but to each his own. I would like to see an actual auto trans with a hi low range would be the ultimate. I have a 75 blazer 4x4 automatic great for the mud.post-1877-0-98137800-1400277987_thumb.jpgpost-1877-0-26038000-1400278315_thumb.jpg

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Ok, problem has gotten worse. Watching my fuel pressure and even at idle it will go from 55# to almost nothing and almost die then bounce back up, you throttle any at all and it starves and dies? This is a new pump and the old one did the same thing. As long as you are throttling on it while riding its fine, just maybe sluggish on initial throttle but slow down to idle and it will start fluctuating?

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I had that happen once. The fuel rubber fuel line was pinching off because of the loop in the fuel line was to small and restricting fuel flow.

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Thanks everyone for your help, I am going to try a different pump, my new one only puts out 40psi max and I am betting the one that was on it was the same. I will keep you posted

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