| Author | Message | ||
| Mitch Alsup (Mitch_alsup)
Member Username: Mitch_alsup Post Number: 365 Registered: 4-2002 |
If you visit: http://www.ferrarichat.com/discus/messages/112/211073.html?1046368018 third posting has three pictures. The lowest picture is a 96+ F355, the middle picture is a 95 F355, and the top is an F360. | ||
| Mitch Alsup (Mitch_alsup)
Member Username: Mitch_alsup Post Number: 364 Registered: 4-2002 |
It is interesting that the F360 reverted back to individual intakes als 95 F355. | ||
| Red (Redhead)
Junior Member Username: Redhead Post Number: 156 Registered: 12-2001 |
Mitch-- The OBD I computer system was known as the Motorinc 2.7 and the later was the Motorinc 5.2. Just another FYI. | ||
| Mitch Alsup (Mitch_alsup)
Member Username: Mitch_alsup Post Number: 362 Registered: 4-2002 |
No, all F355s have the individual throttle bodies burried in the velocity stacks. The 95 F355s have individual left/right air systems, the left air inlet feeds the left air box that passes through the left air metering section then feeds the left cylinder bank.... The 95s use OBDIO-I ECUs. The 96+ F355s have a different arrangement that after the air box and filter, they neck into a common point where air mass is measured then diverge into the left and right cylinder banks. The 96+ use OBDIO-II ECUs. | ||
| Jeff Edison (Euro308guy)
Member Username: Euro308guy Post Number: 256 Registered: 7-2002 |
My 348 has 2 Throttle bodies | ||
| Frank Parker (Parkerfe)
Intermediate Member Username: Parkerfe Post Number: 1827 Registered: 9-2001 |
I believe that was only on the 1995 model. Later 355s went to two throttle bottles I believe. | ||
| Mitch Alsup (Mitch_alsup)
Member Username: Mitch_alsup Post Number: 360 Registered: 4-2002 |
Individual throttles provide faster response in both directions of throttle movement. Individual throttles allow the rest of the intake system to operate at (almost) atmospheric pressure, improving efficiency. This also lets more of the intake harmonics reach our ears. | ||
| Philip Airey (Pma1010)
Junior Member Username: Pma1010 Post Number: 152 Registered: 7-2002 |
Jeff I hadn't realized the difference either -- does the 348 have a plenum and 2 TBs? | ||
| Rob Schermerhorn (Rexrcr)
Member Username: Rexrcr Post Number: 278 Registered: 11-2002 |
Going with individual throttle's for each cylinder vastly improves response and potential flow quality. FWIW, I knew ten years ago it would be this spec. when the rumors started as to what the 348 replacement would be like. | ||
| Jeff Edison (Euro308guy)
Member Username: Euro308guy Post Number: 255 Registered: 7-2002 |
Did you guys know the 355 came from the factory with individual throttle bodies? I never realized this. This must be the reason, (along with the 5 valve heads), it makes so much power! I swiped this pic from the wrecked car on eBay.  |