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So if plugs haven't solved problem fuel pump is next? I can't, won't get the car tuned on E85. IF I'm interpreting correctly. I should probably leave car as is decide on a tuner and let them advise?

Reasoning for fuel pump. Car was not running right under power. Floor it usually get a stutter, sometimes a check engine. Low Rpm surging. I changed the plugs. Drove about 100 miles CEL IS ON AGAIN. Had autozone pull codes. Attached. I bought this car about six months ago. I don't think it's...

I think I'm limited to a 91 tune E 85 is not readily available.

Great info. Thank you. Did you change injectors?

Looking for som advice/recommendations. CEl on car Multiple misfire, p0300 codes. Changed spark plugs. Issue persists. Next step is fuel pump? I'm wanting to use DW400, A BAP and some gt500 injectors. Then get a better tune than the roush one. End goal is probably about 800 whp Advice is...

Higher end of budget headers would be? If such a thing exists.

I was working under my car and noticed what I think is a small exhaust leak. No clue exactly what all this is. Can anyone identify what my current setup is? This car is a Roush stage 2. Another question is what parts should I use for repairing the section that's leaking? Don't want obnoxiously...

I cut the strut tops with Steeda tool. Setup quickjacks. Father's day present from my kids. Lowered my car a bit.

Still available? Can you confirm it fits this hood?

Pulley is an 85mm . Would an 82 mm pulley and tune gain 50rwhp? Not wanting to go catless yet.

Thanks all for the suggestions and advice. Couple of questions. Is the car now basically at the limit of melting cats? If so how can I get more power and pass emissions? Would a non roush tune improve performance even without improving power? The cars is pretty nice now, however I was hoping...

I picked up a 2015 Roush Rs2 mustang. Seller claimed 750 hp. Not sure if this is at the flywheel? Or at the wheels. I'm not a tuner, never owned a mustang or a aftermarket boosted car. Took the car in this morning to get a baseline on the dyno! Well on the drive there the car lost about a Honda...