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

Portlander

Mightybobo, you answered my main question, thanks. Never realized that the Nismo exhaust was that bad of a product, the installation at the dealer was going to be so easy for me.

Steve, the Stillen CBE was initially my first choice and now may end up being what I go with. I'll just have find a place to install it. Is a ECU tune required with that set up, and if not, why, when it's required with the Nismo exhaust. Upgrades seemed less complicated during my 5.0 LX days!

Also read that there were some installation/rattle issues with the Stillen CBE mounts?

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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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