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Really? I've heard differently. Any proof to back that up?

I'm looking into headers now. I have bbk shorties already, but the plan is running a 75-100 shot in the near future and was curious if I'd be better off with longtubes. Was also curious what brand longtubes to get as well as any problems people are having. Any advice is appreciated

Just saying my car actually runs worse than stock on the sct tunes. It's pathetic

I completely understand. Like I said, my numbers may be off because I'm working with prior knowledge so take it with a grain of salt. Once you ride in the mpt tuned car let us know what you think about it! I'd definitely like to hear your opinion

I've spoken with mpt about this issue. They sent me this Hi Zackary, On these cars, airfuel is not really something you have to worry about. Your vehicle has 2 full time wideband sensors that will control airfuel nonstop even at wide open throttle. Airfuel ratio in general is a function of...

What's wrong with mpts afrs??

Sick of that usmc guy hyping up sct canned tunes. Literally almost worse than stock. God damn

Sct canned tune sucks compared to mpt

Same problem here. Most s550s I see have this issue

I live in north port so I'm also local. Definitely good numbers. Curious to see the logs

Is the lean problem only with longtubes or catless? Trying to decide on if I want to put shorties on or go longtubes

Well I've only had it for a day so I'll see if it changes at all

Occasionally I'll get an Upshift where the rpms will bounce up 100 rpm right before the shift which I wasn't sure was normal or not. Also it seems like some of the shifts are just harsh compared to stock and wanted to know if that's what other people have experienced

Wot I'm at 11.5-12.2 depending on rpm. Also if anyone has an automatic and has the mpt tune I have a few questions about the shifting

What is everyone's air fuel ratio at wide open? Mine seems a bit rich spiking at 11.2 and usually staying at 11.4-12

Did anyone get a dtc code right after tuning?

I have them and I love them! Led all the things sells them. Great company!

Will it do this with automatic as well? Love the sound of the 2 step/rev limiter but mine doesn't bounce like that. Just ordered my tunes today so should have them soon

Yeah I was told that it was my fault that they cracked and that taillights aren't under warrantee anyways. Clearly there's some sort of defect or issue if there's multiple people with cracking taillights. I got lucky and found a new one off a wrecked car for $225 shipped though. Good luck with...

Most of the time ford listens to what the dealer says on warranty claims so that's not entirely true