| Author | Message | ||
| Matt Karson (Squidracing)
Member Username: Squidracing Post Number: 553 Registered: 3-2001 |
This is exactly why I laugh to myself when people say 'by the seat of my pants, I can really tell the difference in power' when talking about a new air filter, exhaust, etc... I love that one. | ||
| Peter Pless (Aircon)
New member Username: Aircon Post Number: 16 Registered: 6-2003 |
Mark, as soon as i hit post i wondered if someone would mention turbos! Interesting though is that with motec you can adjust just about everything..injection timing, duration, ignition timing...you name it...yet NONE of that improves on what Ferrari already had! I think we tend to underestimate them sometimes. Point is, anyone who claims that they sell aftermarket chips that guarantee any increase in performance, or an exhaust or air filters (also tried those) would have a VERY hard time convincing me that their product could make the slightest difference. I probably should have pointed out that all the 355s tested were the early models and they (the non motec ones) had the motronic 2.7?? i think it is. | ||
| Rob Schermerhorn (Rexrcr)
Member Username: Rexrcr Post Number: 824 Registered: 11-2002 |
Peter, thanks for the data! Love it.  Rob | ||
| Mr. Doody (Doody)
Intermediate Member Username: Doody Post Number: 1784 Registered: 11-2001 |
of course - peter was just talking about minor mods. put a blower on it or a turbo and the curves will have to change. doody. | ||
| Mark Eberhardt (Me_k)
Member Username: Me_k Post Number: 721 Registered: 5-2002 |
--anything you do to a 355 powerwise is a waste of time-- Well that not completely true, on any modern car air filters and mufflers don't do much, but adding boost always works. | ||
| J R K (Kenyon)
Member Username: Kenyon Post Number: 824 Registered: 10-2002 |
My dyno chart of my 348...  | ||
| Peter Pless (Aircon)
New member Username: Aircon Post Number: 15 Registered: 6-2003 |
Oh, sorry Doody...yes...there are obvious sound differences, but otherwise, no matter what people tell you, anything you do to a 355 powerwise is a waste of time! | ||
| Peter Pless (Aircon)
New member Username: Aircon Post Number: 14 Registered: 6-2003 |
The tester chooses a gear (usually 4th from memory) and runs it to around red line. What happens at very low speed at the beginning of the test is innacurate due to the time delay in the take up of the dyno, so ignore that. | ||
| Mr. Doody (Doody)
Intermediate Member Username: Doody Post Number: 1780 Registered: 11-2001 |
aural stimulation aside, one might conclude from this data that the motec and exhaust changes on F355s have no material effect on performance, other than below 25 mph? doody. | ||
| Bart Duesler (The_bart)
Member Username: The_bart Post Number: 352 Registered: 1-2003 |
I assume the blue line is the 550. Why does it stop at only 165 kilometer per hour? | ||
| Peter Pless (Aircon)
New member Username: Aircon Post Number: 13 Registered: 6-2003 |
These are the F355s This is the F355 and 550 | ||
| Peter Pless (Aircon)
New member Username: Aircon Post Number: 12 Registered: 6-2003 |
Just in case anyone is interested, I'm including a dyno graph of 4 F355s with various exhausts and one with motec. The results are obvious. I'm also including a graph of a 355 v a 550. |