View Full Version : tuning

09-27-2007, 05:09 PM
anyone know if the correct engine displacement for our cars is 308.965 cid. this doesn't look right to me. i did a read on the factory program and this is the value that was set. i thinking why is it not 231 cid? anyone know the answer to this.

09-27-2007, 06:37 PM
Sometimes in order to get the engine's "load" factor right because of some limiting factor within the EEC, tuner's will change the engine displacment factor BUT then a lot of other settings need to be "scaled" by the same percentage amount to keep everything in perspective.

09-27-2007, 07:10 PM
It is a 232 cid engine. I do not know this for a fact, but I would venture to say that since our engines are supercharged they have a higher volumetric efficeincy than that of na 232s. With them being EFI, they would be near or past 85% (running at best). Now, since 232 is roughly 75% of 308, I have to wonder if there is a 10% correction factor to make it safe. Of course, this is all just my speculation.