I just finished installing my Code3 to compliment the 178 crank pulley. This is only for the weekend guys but I'd like to hear from those who've done it so I'm clear in my mind what to watch out for.

Why only the weekend? 1/2 mile event at Roosevelt Roads is why and the 5.0 Mustangs have been talking lots of trash. Our history is that I start out faster than them but then they get out their computers and make change after change after change until they've managed to best me by 1/2mph. I believe stacked could work for me where it didn't for others for a couple of reasons. I'm keeping the air cool with my water/meth system so I should see 23 to 24º of advance all the way down the track. I have long tube headers that have effectively lowered the boost from the 178. I shouldn't reach the over boost threshold. And the tank will have 98 octane in it. (5 gallons of 104 and 5 gallons of 93)

The stock pulley and tools to swap back to stock will make the trip just in case the combo is a failure. I may switch back at the airport even if the combo is a success just to see the difference.

Whichever way it turns out, give my an ear full.

Les

 

You going to try that on your current "super conservative Eurocharged tune"? I'd be very cautious without proper fueling, You are going to spend a lot of time in the high RPMs. But I'm sure you know that already. Have fun at Rosy Roads! Can't wait to hear how it goes, good luck!

 

Concern noted and shared. Actually, I tune with the meth concentration. If I see AFR's hit 13 I'll back off, well, I'll do a few 2nd gear pulls today and if I don't like what I see I'll pull the pulley. I'll be running a high meth concentration and what the heck, I'll run straight 104 for added margin. I've got 5 gallons already and all Sunoco racing gas is sold from a truck at the track.

Les

 

That's a lot of boost. What fuel pump are you running? My signature has a couple links you might find interesting. I'll be surprised if you're not very lean after upping the boost. From my experience a pump and injectors are needed at those boost levels.

Keep you ears open for belt squeal when you let off the gas on a pull.

 

if your not tuning for this setup your running a large risk. i spent 6 hrs on the dyno chasing a tune and a supercharger surge due to the boost hitting so hard it slams the t/b closed at the upper rpms when the throttle is matted.

also if you cant tune on the fly like the stang guys its unlikely you can best them. grip and i have watched the gtr guys at the half mile go from 170 mph baseline run to over 190 mph by upping the boost and retuning on the fly. you cant compete with the new technology available to them. sorry
skip the 93 run the 105, and only race from a dig. hopefully they spin on the launch and you get enough to beat them

 

FAIL .... RETRACE STEPS! I just did a 2nd gear pull and shut down at 60 mph or so. AFR's in mid 14's. I assumed I'd be OK until the top of 3rd but that was so wrong. It looks like NO WAY to supply enough gas even in the midrange spraying full blast. Switching the pulleys when the car cools a bit. At least I can do it in less than half an hour with extreme calm. But man o man she was pulling like never before.

I read all your posts Grip and Steve. Stupid wreckers won't ship the 55 pump to Puerto Rico or I'd already have one. A new one it'll be, I suppose, unless I find something else that'll do the job. After feeling that stacked feeling ..... felt so good.

Les

 

glad you caught it soon. like grip and i have been saying stacked is a massive upgrade and needs the supporting mods to even be able to run it. good luck with the 1/2 mile

 

I try a lot of mods on my car, even ones that have failed for others. I sometimes take calculated risks but not foolhardy ones. Regardless of seeming to be reckless I'm careful and value my car's health. I only did one pull but that was enough to see the severity of what was occurring. Off it comes, for now. A little following the footsteps i.e. fuel system mods and perhaps I'll give it another shot.

The Mustangs are my slaves on the road course and most are in the 1/2 mile too unless using nitrous or boosted. But I hate being 5 mph faster and running the exact time again and again while every run they get a little faster and faster. I wanted to slam dunk them this time or cost a few engines. I'm going to tape off the upper grill after the first few runs and see what happens.

Les

 

sadly les im in the same boat. after less than 5 runs at the half mile i knew how fast the car would be no matter what i did. the gtr's and mustangs, vettes all have greedy boost controllers or laptops running motec ecus and just keep tuning up the wick making more and more hp. nothing i could do with a set file on the car.

sometimes its not a bad thing. i worry about changing tunes and running 1.5 bar forgetting about it and put 93 oct fuel and make a run and pop a 30k motor. im considering a 100% meth setup and bigger turbos for the winter and tune for it. should help me hit 625 rwhp

 

Your rail pressure it too low and your going lean due to boost restricting the injector flow. Talk to Rob, I have my rail pressure determined by the boost and checked by the zytronic computer. Iam using a fuel pressure regulator on the air side of the manifold to give me a pressure signal that goes up one psi per psi boost AFTER hitting a start point that I have set. The extra fuel pressure regulator that Iam using is sending a modest signal ( air pressure ) to the fuel regulator to up its setting. Like 60 at idle and 70 over 15 psi boost, with a start at 5psi in this example.

The boost is retarding fuel flow in the injector, by pushing back against the incoming fuel. At idle your 60 psi rail is giving over 60 psi differential. At 20 psi boost, your getting an EFFECTIVE 40 psi fuel rail difference, thus the leaning out of the engine, even at max injector duration.

Woody

 

I know all about the Waldig Rob fuel pressure regulator kit. I'm still trying to figure out how to do global logging. If I was relatively sure I could figure out how to set it up, I'd most likely buy it.

Les

 

Awesome!.....how do you get all that to the tarmac at 1300+kg's...?