I have towed in all three settings, about 5000-5500 pounds with a three stage Super Chip.. On both higher settings I have tripped my engine light.. Code number PO234.. Looked it up at all data, excessive boost.. According to the article, that code will only trip if the turbo exceeds 35 lbs of boost.. I was under the impression that the Dmax turbo wont excess 25 lbs... ??? I have had the light 3 times out of 6 trips.. On each occasion, it felt like the truck reverted to stock settings until I cleared the code... Have never had a code while daily driving.. Even on the higher setting...

Any input on the code would be appreciated.. Is the "excessive boost" gonna cost me bucks????

Thanks in advance for all your help guys