This is my plan, will it get me to 350 HP?

m4a1mustang

With basic bolt ons an ECU tune is not required. We have an adaptive/smart ECU which does a pretty good job of "learning" bolt on mods. That's not to say a real dyno tune isn't going to be beneficial... it is, but it's not necessary.

I don't know who told you that the Nismo CBE requireda tune. That's simply untrue.

As far as the Stillen CBE rattling... I think that issue has been fixed. Some of their earlier runs did not fit well and made contact with parts of the car where they shouldn't have. I think they fixed that. I'd definitely check out all of the other CBEs available just to make sure you get the best one for you. I ended up going with FI and should have it late this week or next.

Good to see another Mustang guy on the boards. Surprisingly there are a lot of us here!

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Portlander

Read about the ECU tune on numerous sources including posts here. It was understood that the 18 HP gain achieved by the Nismo Z was due to the Nismo CBE and required tuning. And that was all I was really looking for as far as a performance boost. Thanks.

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