Define 'correctly'? Based on Gh21631's data, the install of headers with the stock tune improves the a/f throughout the power band, with perhaps a slight rich dip at max rpm. I almost doubt that is truly the stock tune since it mirrors his final tune so closely Stock tune is a super rich flat line in the stock header pull
Correctly as in tuned to take advantage of the parts to give you equal to or better performance compared to stock. Just bolting on major exhaust components is expected to have a negative compared to stock impact without ECU adjustments to fuel and timing.
Most dynos show more power after headers and exhaust. My car is faster than a stock f430 with my addition of AP headers and sline and stock ecu.
My car was a lot faster after a header swap, so much so that getting back into a stock F430 - even a later one with Scud valves/cams etc. fitted as standard - feels slow.
Now imagine optimizing those new parts. My car feels ridiculous now. It is so much better than stock, way more responsive. Downside is that it will easily break loose if the road is cold all the way to 3rd and I have 325s on the rears.
Maybe it just "sounds" faster, I really find it hard to believe that some headers and a tune will make an F430 "feel slow" in comparison.
It's on my list. I've got larger MAF sensors on now and need the right tune for them. They really do make a big difference to performance.
Interestingly, Ferrari spends a huge time developing the intakes on the V8 cars. Unfortunately the same can't be said for their V8 manifolds. There's quite a bit to be had by getting a better set of manifolds on the modern V8 cars.
I was thinking of going the EC route too. Have they a file that addresses the A/F issue with the aftermarket headers?
The problem with sending off your ECU is that they cant make real time adjustments. To maximize my gains they went back to the tuner 3 to 4x with data and they made the changes and sent the sw back.
I'd get EVOMSit tune instead of Eurocharged...I had a very bad experience with Eurocharged tune on my AMG last time.
EU tuned my AMG also last year. They were quick in addressing the issues I was having and they are local. Convenience sometimes trumps minor attributes. Besides, Todd (@ EVOMSit) never returned my calls.
Mase (now also a f430 owner and forum member) custom tunes many ferraris and other exotics. I would recommend reaching out to him as well
OE Tuning has my data which is based off Fabspeed & Sline. Might not be a bad option. My tune was done for 93 octane btw.
short answer: the car had an x pipe and no cats. These headers (like others) will change the exhaust pulses coming out of the engine. When you change headers runner lengths, diameters, merge angles, collector type, secondary sectionals, etc etc will change flow and pressure. X pipes, when properly done, can help stabilize the velocity of the exhaust pulses. So many factors come into play. Some setups might make a good bit more power on the top end, but sacrifice down low or midrange, or vice versa. To add X pipes on some setups wont necessarily make more power either, just helped on this particular setup. There is a lot of science/math that comes into play to correctly maximize a full exhaust design, but most companies will just try different packages as they see fit, especially when they are facing cost/size/packaging/reliability constraints. With all that being said, the agency power/fabspeed are popular because they are relatively affordable and easy to obtain here in the states. There are some things I'm going to test, not necessarily within the exhaust to try to reoptimize the mid range where the dip occurs.
That car has the exact same setup as mine minus the cats and I initially had that dip - still do a bit so I have hard time believing that removing the cats smooths out the power curve to that extent. However that is the only difference. Otherwise peak power is comparable.
Thanks for posting about the SuperSprints. I contacted SuperSprint - Italy yesterday to ask if it was possible purchase their headers with a flange to connect directly to the stock 430 exhaust - answer the collector is oversized and will not connect to the stock 430 exhaust. You must use either their companion cats or straight pipe cat replacements (I also just noticed that this is noted below the product code on their website). I'm still intrigued by their stepped design, use of retaining springs vs. hard bracket mounts. The euro pricing is competitive at 3,638 (~ $3930 U.S.) w/o VAT, but their stated U.S. pricing if you select that option on their web page is less attractive at $5,107 - maybe they haven't caught up with the latest dollar/euro exchange rates. I did manage to find a North American Rep for SuperSprint, however their pricing is even less attractive ($6,111) > Supersprint North America : Step Headers . To add more confusion, the NA site has a comment in bold print "Legal only for racing vehicles which may never be used upon a highway. Not applicable or intended for street or highway use." If that is true, I'm not sure why SuperSprint would offer cats and "sport exhausts" for the 430. ...a lot of great information in this forum, particularly useful for a 4th owner 430 spider with 20k on the clock and no history on the stock exhaust..... pretty sure I see a smoke test in my immediate future.
