p1211 like always,p1249,p0478,po238. now the 238 is boost so do i need a fooler for this one?9which one)p1249 is wastegate i do have the banks bighead accuator??po478 exhaust pressure high. now when i got the p1211 code i was running autoenginuity recording and the highpop was 2552 the icp voltage was 2.99 and the icp percentage was 61.62 which i think is high because stock only gets tho 39 percent

 

P0238 Turbo Boost Sensor A Circuit High Input - This is from too much boost pressure at the MAP sensor. If it see's over 22-24 psi, it will set this code. A MAP line regulator will cure this problem.

P1249 Wastagate Fail Steady State Test - Related to the overboost code as well. The truck probably thinks that the wastegate is stuck shut, causing the overboost situation. Your Big Head is contributing to this, but it's not a reason to get rid of it. The MAP line regulator should also get rid of this code.

P0478 Exhaust Pressure Control Valve High Input - You'll get this code no matter what you do, as long as your boost pressures are above 24 psi. This one comes from a sensor in the exhaust (passenger side manifold). However, it does not trip an SES light. Supposedly it will cause the truck to de-fuel though. Garrett at BCPD (site sponsor) sells a code eliminator that will get rid of that code and any de-fueling that may result.

That P1211 code, as you know, is common with the chip. I get it too. The only fix for that one is big oil.

My recommendations to you are: get a MAP line regulator (ITP sells them), optionally get the EBPS code eliminator from BCDP, and keep your Big Head actuator. I'd start saving up for big oil too. I know that P1211 code has been giving you problems for a while.

 

What is this "big oil" fix? I am going to get Jody's Towing PCM flash so is this what I have to be prepared for?

 

by installing the map regulator will my gauge inside only show 22 as well?

 

Depends on what where you have your boost gauge line hooked up. If you have have the gauge tee'd into the MAP line then yes, whatever your map sees your gauge is only going to see that. I have my boost line hooked up to the AIH delete plug. I've tried both regulators and relief valves, both still set off the SES light at one time or another...maybe it's just my luck. My regulator would sometimes spike and the relief valve did relieve pressure but not enough so MAP would always see 25 psi for a moment or two. So I just ordered this (Scroll all the way to the bottom):

http://www.spdiesel.com/other.htm

I'm supposed to get it Monday or Tuesday and will see how well it works. SP Diesel guaranties it will work or my money back so I just had to try it Not like I care about the money, it's only $30 lol. I like their confidence in their product.

 

david let me know?? and when it sets the code does this make the truck run any different while the code is stored?

 

mtgrzlyman I'll let you know. The truck doesn't run any different during normal driving. Just that when the light comes on and you're on it, it defuels so the boost only hovers around 24-25 psi. When the relief valves or regulator work like they're supposed to, there's no SES light and boost will be around 27-30 psi. The stock turbo isn't that efficient up there anyway so I don't worry too much about it, plus I hardly get it up there. My SES light goes away after a min or so of driving, does yours stay on or go away?

 

it goes out after a while of just cruiseing

 

Sounds like your regulator wasn't working properly. I've had both, and I prefer the regulator to the relief valve, because with the relief valve there is a boos "leak" as it bleeds off the excess pressure. I had a dual relief valve. It would always spike and set off the SES light. The only time my regulator does it - it's my fault for having it adjusted improperly. Also, if you have a regulator and you tee your boost gauge into the MAP line before the regulator, you will still see true boost. However, I do agree that the AIH delete plug is the best location for the boost gauge line.

 

jtharvey, I should add that the regulator(s) I've tried weren't specific for the truck like the ones dieselsite sells or the ones various diesel places are selling. That's probably my problem right there. The ones I tried are for air compressors. I tried a Home Depot version and a Harbor Freight version. Both spike when set to that low of a pressure. Would spike to 27-28 psi then come down to whatever I set it at below that.