Funny you mentioned it because I was going through some of my old datalogs when I ran the Hallman MBC and noticed about 150-200RPM quicker spoolup with just the IWG. I am going to try the hybrid boost control setup and report back.

 

Keep me posted, my friend.

 

I need some help fellahs. I have received the same P0171 engine code twice over the past week. The first time I received it, I changed the spark plugs and within two days the code came back. According to the code print out, it is caused by either: ignition system faulty, fuel system faulty/injectors or pressure, vacuum leak, or engine mechanical condition. I am starting to believe that it is the coil on plug system that I have as it was only tested up to 32 PSI which is where the car currently sits. I do not have a boost leak as I have checked that up to 30 PSI. Does anyone have any feedback about the injectors or either something mechanial that could be contributing to the issue? Lastly, should I run the stock OEM coil packs to keep the set up simple?

 

that code is just the front o2 sensor. you could have an exhaust leak or something in that regard. or maybe one of the fuel trims swung to far int the positive throwing that flag code..

the code isnt anything to sweat over, but if you want you can shoot me over some logs and ill take a look for you since i know CEL's are very annoying to look at.. id like to review raw logs first though before just disabling the DTC for that CEL. (idle first) - just email me or google chat me and ill give you instructions.

 

I will knock this out next week. I have basketball tournaments and Father's Day festivities.

 

I cannot express how much I love my EF4/2.4LR. This is all on a single Walbro. Tom has convinced me to get a double pumper which will more than likely be after the summer. There was a slight spike in the run which I hoped did not happen. Megatron is SCARY FAST and certainly more than I can handle at the moment. In all gears, it feels like the car is about to blast off or something. Thanks Tom!

 

Great power, but still puzzled how you're making 560 whp on a single Walbro. I assume you've gotten a few tanks of E85 through it now, so I'm wondering if you know the ethanol content at your E85 station.

 

that graph he posted has a spike in it. i told him not to post it. i know the cars over 500 but its only barely over 500.. by a few hp. the very first graph in the first page is more accurate then anything else.

Levar just wait to share more power once the double pumpers in there.. when a spike occurs in virtual dyno from faulty log data it inflates the number by a good 80whp.. that said even though that graph is 100% flawed, the car will make over 600 once you get the proper fuel pump setup in there.

that graph is only accurate up until 6000RPM.. anything past that its inflated by a good 35-40whp.

 

Yes, I have gone through about three tanks now. As for power, the chart is saying 546whp, not 560whp. I cannot explain the power the car is making.

 

Crap! You did say not to post it. Forgive me. I will be more careful next time as I only want accurate data posted. Sorry fellas.

 

its ok man honest mistake. everyone knows your car is flying though. and i bet it traps about 128mph as it sits.

but i want to post this to show you how i know its inflated so you know also.

heres the clean accurate graph thats posted in the first post of this thread:



heres the graph you just posted that i said not to post because it had a spike:



you see how its very easy to tell the one has a spike and is flawed vs the other.

 

Thanks for sharing this and thanks for teaching me.

 

not a problem. you could take the car on the interstate or somewhere the road is really smooth and try again though and i can share that graph for you.

 

This was the same road as I did the other pulls. It is by far one of the smoothest around my neighborhood. It is right off the main road a bit outside of town where there is low traffic.

 

Why not just do a walbro 460, its more then enough for your setup.