I know i'm alittle late but thanks. So the fastman basic wont require a tune correct? I understand I'll benefit the most from one however.I sent mine to Fastman last year to get the standard front only mod done on mine. It was only a week turn around to get it back. If you can not have your car down that long, call him and have him send you one that is already modified. I have not had any problems with it. It is a real easy swap, remove the intake tube, unplug the connector then remove four bolts. But be careful putting the bolts back in because they screw into plastic.
This modification to TB plays real nice with a tune. I would do both because it will really wakes up your car.
The stock 80MM body has plenty of flow for the 5.7.
5.7L 6.1L 6.4L Hemi V8 Throttle Bodies - The Fastman
Even the 2014 RT? I read the SRT's basically come with a CAI. Just the tube and filter swap would be as beneficial on my RT?You are correct on not needing a tuner when having the TB modified. But your stock intake box is designed very well and it does pull cold air in from behind the grill and flows good. All you need to do is get a intake tube from a new charger, and maybe a different drop in air filter. Then to really wake up the engine, get a custom tune from Johan. The charger intake tube does not have the ugly wart on it, this way you will have room for a catch can.
Know how I can tell? It honestly looked like my piping went from 2 1/2 to 2 1/4 at one point but i'll have to inspect more. I already have the resonators gone and am considering putting them back and deleting the mufflers now that I have cut outs installed.I've been reading a lot but still have questions. It would be for my 2014 auto RT.
1. I understand a 85mm will help even stock engines with throttle response. What one'shave had the best user results?
IMO the amount of money to go from 80 to 85mm with no other mods is a waste of money, if you want to improve your throttle response just do a resonator delete kit or a full cat back, it's amasing what an exhaust upgrade can do, I would not recommend the resonator delete kit if the car is a non stp car, the non stp cars have 2 1/4 inch pipe with cheap little mufflers and most people that have done the resonator delete don't like the drone. If the car has the super track pack it has 2 1/2 inch pipes with 2 bottle style glass packs, removing the resonators really open up the 5.7 but there still will be some drone, just get a good kit, the 6 speed cars benefit the most with this inexpensive mod, if you go with a full cat back get one with an H pipe instead of the X it improves your torque a little over the X. This is JMO because I have already done it and noticed the throttle response right away and the sound is great and it didn't cost anywhere near what a 85mm TB cost.