Scuderia exhaust options

Thank you, how did you like your original full IPE setup? I’m going for a similar effect. Why did you change to stock muffler?
Was pitch high F1?


Sent from my 16M

 

I changed to stock muffler because with this setup I can't drive silent with closed valves. It was too loud with closed valves and it was illegal. Now I get the Kline Inconel muffler and now this muffler is legal with a high pitched sound and with closed valves smooth to drive without any drone.

 

Do you feel the price of the Capristo headers was worth the change? It believe it is 2-3 more in cost, but it does come with nice blankets and is made of a higher grade stainless steel.

 

@ShineKen
I bought the iPE 4in1 first because of the price. I also did not expect that they have a worse performance than stock. At 4,000 rpm they have extremely broken down to 5,000 rpm. Fabspeed, AP Racing etc are all the same 4in1 headers. Think the facts are the same everywhere. I also had it ceramic-coated. But was still very warm in the engine compartment.

The Capristo are in Germany 1.500 € more expensive than iPE, but the extra charge is worth it. You do not have to worry about the heat in the engine compartment. In addition, they work better than stock at any speed and overall much better than 4in1 headers on the F430.

Here the diagram still without software of Mase.

Black line = Capristo
Green line = iPE
Red line = series

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Interesting. So the red line is stock headers? Do euro OE headers have a cat? The Capristo headers performed better than IPE headers from 6,000 to 8,500 RPM. I was not expecting that. From 2,000 to 6,000 RPM the difference between stock and capristo seems to be a marginal bump in hp and torque.

IPE, Agency Power, Fabspeed seem to have a similar design. I haven't visually compared them to Kline's headers.

Supersprint seems to have an interesting 4-1 design. Starts off with a small diameter then leads to larger piping into a 4-1 collector. I'm assuming the smaller diameter is to improve low end in the 4-1 design. I am actually surprised to see Capristo didn't lose any low end to stock headers although it has a much larger diameter.

Freshmeat's 4-1 Powercraft headers is also much different in design to the other 4-1 headers on the market.

 

Other F430 had a larger torque increase in the middle speed range with the Capristo. It shows that the F430 4in2in1 works very well. It is also very hard to get better performance with hardware on a naturally aspirated high speed engine.

The original manifolds have Precats in it.

 

The graph indicates the stock headers have fairly decent performance. If they were catless, they might have comparable or close top end to Capristo. The only way to know for sure is to compare a Scud header (OE header w/ no cats) to a Capristo. I have lots of miles on both and my butt dyno tells me there is a bit more power mid to high.

 

I think the Scuderia or Challenge Manifolds are a good choice. Not in the quality and performance of a Capristo, but quite good.

 

I have capristo’s heavy duty header and cat blankets, engine bay temps were unchanged w my old capristo setup, fabspeed and current powercraft setup (measured w infrared digital thermostat after 15min of runtime).

Ceramic coating has negligible to zero effect on keeping engine bay temps down. Any header generates the same amount of heat; it’s how that heat is dissipated and redirected that determines ambient engine bay temps, and a thin coating does diddly squat in that dept. The capristo blankets insulate and help redirect heat towards the back end of the car, and you can literally put your hand in the blanket after a few hot laps and it will be cool to the touch...try that w a ceramic-coated header, and I guarantee you’ll burn off all your skin or lose your hand.

Also worth noting, is this dyno for just headers or for a full system? It matters significantly and I reckon would significantly impact any dyno charts because exhaust flow goes through other subsequent sections not just the headers and those subsequent sections help determine backpressure etc

 

All measurements are with 200 cell catalysts. The iPE measurement with iPE X-Pipe muffler, but the muffler costs only 3-4 hp on engine.

 

I have another data point:

Capristo headers + stock cats + Kline Inconel Muffler


I had to put the stock cats back on because I was on a short time frame to pass smog. I was also able to get my cigarette lighter fixed and get the Kline Valve controller working. It works perfectly and conveniently located. I believe it's the lightest of the 3 systems out there.

Overall, I would say the Kline Muffler is a tad bit quieter than a stock muffler. I ran Capristo headers + stock cats + stock muffler for quite awhile in both normal valve function format and open format. Open format sucked and droned quite a bit. Made the car sound cheap imo. A bit too loud on cruising as well. Went back to normal valve function as soon I could. NOT the case with the Kline muffler. With the convenience of the valve controller, I pretty much left it open most of the time. No drone. Cruising volume is very tolerable and sophisticated. However, hard to extract F1 sound from the stock cats unless you're on it.



Conclusion: Stock cats not recommended with Kline muffler. I would recommend 100 cell cats or straight pipes. I have no personal experience with a 200 cell or straight pipes w/ this setup at the moment. Stock cats also get very hot and heat up the engine bay. We will be putting either a straight pipe or the 100 cell cats back in and report back.

 

Image Unavailable, Please Login Image Unavailable, Please Login Loving the look of the Kline Valve Controller