800XCR

iTrader: (2)

I respectfully disagree - 5 psi without ecm recal = BANG! Have you talked to Zeke at Gruninger's?

LAKESIDE RESTORATIONS

No problem you are entitled to your own opinion.. I have installed numerous prochagers as a distributor.. Havent had any pop becasue of not recaling the ecm when set up properly. Not all of them need recals if set up properly. I never said that there werent exceptions to the rule. Dont just take my word for it, call ATI if you dont believe me, ask for one of the engineers like Dorian or Jim... Just out of curiosity are you an installer, or a boat owner with a SC?? I am not bashing you, I am just stating our experiences & Ati's installation & set up instructions and reccomendations.. Jamie / Lakeside

800XCR

iTrader: (2)

No issue with procharger - just disagree with the install without ecm change.

Do I own a boat, not at the moment we are headed to the other side "cruiser" Last of the kids are gone and looking for a floating cottage.

Do you guarantee your customer's engines won't grenade without an ecm upgrade when you install a kit? If not, why not if you are so sure?

What parameters do you use to determine if an ecm needs reprogrammed before the engine is damaged?

I know that not all engines are created equal, but I would guess that the base 7.4 doesn't vary too much engine to engine. Why would one stock 7.4 require an ecm change and the next one not when the calibration is the same in all of them?

Not bashing either, just curious.

Pat McPherson

My personal experiences with Procharger installs on stock engines is that the ECU does not require recalibrating, only that the fuel pressure is raised.

The problem does definately sound fuel related. I would suggest the ECU be sent to Mark at Percision EFI or Tyler Crocket to be recalibrated back to stock or what ever they would suggest. I have not had great luck with AZ Speed.

LAKESIDE RESTORATIONS

I already specified why above as is did annother individual above. Whipple does recal or replace ecms depending on application, ATI does not.

If this is not your thing & not your field there is little reason to doubt me.

I install them properly & as per the ATI's or Whipple's etc.. instructions. As far as guaranteeing that an engine will not launch at a later time due to a SC upgrade I dont know of anyone who would gurantee that an engine will not ever launch. If they do they are charging you extra for an insurance policy on it to redo it in some form or annother. For example there is a huge diffenece in price on installing an add on Procharger VS buying a warrantied blower motor from merc with a 90 day warranty. Nothings free, you alway pay for what you want in one form or annother. Some warranties are jokes & just not worth the money..


If it is stock I leave the ecm alone unless after PROPERLY setting up the fuel & spark system it doesnt run or operate properly.. this is a rare exception. The only time I would recommend a recal is if you are running more than 5 psi boost and or you have done other major internal & exhaust mods. As this could throw off the ecms parameters it needs to see more than running 5 psi boost or less with a procharger.

I addressed this in the above statement. Also As I said earlier Whipple & some others do require it due to thier fuel delivery systems etc... But again ATI's doesnt require it, it is only with some fairly rare exceptions that it ever needs to be done on a stock engine with a low boost procharger upgrade.. Also Ati has ECT sensor conditioners for certian applications if needed, as well as fuel psi reg gain realibration kits. Recaling a stock ecm on a low boost set up that wasnt installed with fuel & spark st up properly may actually mask a potential problem like the person who started the thread is experiencing. Once it is set up properly if you want to recal an ecm to further tweak a system is an entirely different scenario and may or may not be worth while depending on why one is thinking of doing it..

Neither am I, but I am an experienced installer and I am just stating what normal ATI procedure is. Where as you on the other hand are evidentally not an installer or operator of this sytem. Again I am not bashing you I am just stating the info & experience at hand.. Again if anyone doubts me feel free to ask ATI..

Jamie / Lakeside