Tubi GTC gone, F430 back to stock exaust, lost power?

I am thinking about removing my TUBI from my 360 and replacing it with a Ferrari factory racing exhaust system. would you not recommend this based on your post?? thanks!!

 

Its all mental. A muffler swap yields little to no power. You're still flowing through stock header and cats. The louder tubi makes it seem that way and you might be unconsciously tapping into more of the tach with tubi for the sound effects. I know I use a lot more tachometer real estate now that I have an exhaust I can readily hear.

F430 already comes with racing exhaust

 

Butt dynos can be decieving. Your factory exhaust flows better than any tubi.

Tubi goes through muffler and then to tail pipes. Ferrari 430 exhaust completely bypasses muffler when flap opens which it does if you drop the hammer at 3k rpm. So how can any muffler system flow better than 2 huge ass pipes straight out the back.

 

You're likely not imagining things. Different exhausts perform better in different environments than others. At the lower RPM the valves would be closed on your OEM muffler causing the gases to go all the way through the factory muffler. With the Tubi, since you don't have any valves, you would see a nice increase in performance in the lower and mid RPM due to the reduction in overall resistance.

Never underestimate the value of a nice exhaust on a Ferrari. In my experience, Ferraris respond better to exhaust upgrades than any other naturally aspirated cars out there. That's likely due to the incredibly high efficiency of their engines, the more gas you can expel the happier these engines are because they will take in as much air as possible on the intake side.

 

I challenge almost any of you to validate your "butt" dyno. In a car with over 300 RWHP, I seriously doubt anyone could consistently tell the difference in 25 RWHP. It usually takes at least 50 for a novice to even notice, and 35 for experienced to really tell the difference. You will see subtle differences in objective measurements, but typical gains or losses by an exhaust system are only "subjective", nothing more.

My M6 has a "M" button that takes you from 400 hp to 500 hp with the push of a button. You would think that would snap your neck and give you an OMG feeling. But it doesn't. It pulls harder by a little bit, but hardly a huge difference in the butt dyno. If it's subtle at 100 hp, do you really think you can feel 25 hp?

 

Keep in mind when you swap exhausts and the back pressure is affected the car wont run properly until the ecu adapts. This may take 50-100 miles of driving.

 

Yes, I do think you can feel 25 whp. If you can make an additional 25whp or 25 ft.lbs of torque in an area of the RPM band where the car isn't otherwise making copious amounts of power ( I.E. below 4,000 RPM for most V8 Ferraris) that difference will be noticeable. It's harder to feel a 25 peak whp delta as opposed to a 25 whp increase in the low to mid range where the car may only be making 200 hp.

It also depends on the car as well, you add an extra 25whp to an Exige S, you will feel that a lot more than if you added 25whp to your M5.

The car may also respond in ways that can't be quantified. You may have better throttle response, smoother starts and an overall more efficient engine, all things that you can't put a number on but you can definitely feel.

 

I guess switching exhausts will improve power, technically, BUT......

I have owned, riden and raced many superbikes. I currently have a stock zx10r and a fully prepared BSB compliant race bike.

The standard street bike runs standard exhausts with valves for emissions etc - which create all the flat-spots at various rev ranges to meet compliance.

The race bike is stripped, lightened, custom re-mapped, full Ti exhausts from headers back - staight through pipes - air intake filters removed - all hi-flow stuff. super light race bodywork etc. 200BHP at the back wheel on 165kg bike. It is obviously more responsive and more powerful than the street version of the same bike I have - and at Silverstone Arena (GP) circuit you could notice perhaps 1.5 seconds per lap difference with all the race suspension, quickshift electronics, engine work, lightened wheels, revised gear ratio's etc - the race tyres account for a further 2.5+ seconds a lap.

On the public highway, in all reality I'd rather use my stock road bike, as it works better in the real world.

It makes me smile talking about the absolute performance difference on a 3000 lb ferrari with an extra 3-4% claimed peak power - almost as silly as buying CF from ferrari doorhandles and fuel filler cap to save weight!

Don't get me wrong - I love the sound of aftermarket exhausts - and the throttle response on the bikes is noticibly different. I am also a fan of the cosmetic aesthetics of CF (Yeah, I know it's a marmite issue).

But when it comes to the absolute street performance of these road cars - if you want to improve your acceleration then not filling the fuel tank up will be a cheaper way of improving the power to weight and it will help with cornering speed!

If you really want to improve performance, ditch the Fcar and spend a fraction of the cost on a Radical SR3

Just playing devils advocate - dont take offence guys :-D

 

Was going to say just that !

 

Negative. Race system is king.

R

 

Looking at that GTC exhaust and its near ideal equal length pipes and very low restriction muffler, I would expect it to produce significantly more hp, torque, and noise/music than the OEM mufflers, especially at the top end. As long as the Motronic DMEs can make use of the lessened back pressure and improved scavenging, should have been a big improvement. Surprised you could get by Swiss noise restrictions with a system that wide open.

 

That’s easy: You have to bring a new car to the inspection after four years. So you can drive with your aftermarket exhaust during four years. After that they want to see your car after three and then every two years. So you just put the OEM exhaust back before the inspection and the loud exhaust after the inspection. It’s not a 5 minute job but doable.

Markus

 

Markus- There is always a way. Often an expensive way, but a way.

 

Your car is my twin when you had the Tubi GTC
I have different Tubi exhaust tips though, I don't like them.