Thanks but ive also got the msd coils extractors. 2.5 high-flow cat into 2.5 back get it mafless tuned and dem injectors..
Yeah, still not going to make a difference it's so close to stock. All that's going to happen when tuning with those is that the duty cycle of the injectors will be dialled back so that the engine doesn't run rich (or the ECU will dial it back like Immortality said provided it has the correct parameters) - the stock injectors can already provide more the amount needed for that setup so it does nothing. There's not enough air going into the engine (from say, something like a supercharger) where they would be needed.
You also won't be able to mafless tune unless you go Kalmaker and install a MAP sensor. There's no real advantage to it on that setup either, and if you're thinking mafless=power that's also not the case, they pretty much only did it on LS back in the day because the engine already had both those sensors and the MAF was just in the way of the OTR, was also slightly easier to tune to a single sensor depending on how motivated your tuner was. Getting rid of the MAF doesn't somehow magically unlock more ponies, lots of big power cars still using them.
