| Author | Message | ||
| JRV (Jrvall)
Intermediate Member Username: Jrvall Post Number: 1025 Registered: 11-2002 |
You could definately get better flow and more mid range, top end, I'd be concerned about idle quality thou, it might suffer from larger TB's. Also to improve top end you'd need to test the center resonance control operation. The smaller ports improve the low end drivability, for top end the plenum valve opens balancing/enhanceing max flow. It seems that modifying the stock intake which is already full of compromises would simply result in moving the compromises around the rpm range. | ||
| Ernie Bonilla (Ernie)
Member Username: Ernie Post Number: 557 Registered: 11-2001 |
Yes a turbo would be the way to go, or even a supercharger. However what I'm looking for is the bolt on stuff. I wanna keep it simple with just bolt on stuff. Reason being is that here in California we have to contend with the tough smog regulations. So if the upgrades are easy to put on they will be easy to take off when it comes smog time. About the throttle bodies, would there be any gain from boring it out? A friend of mine does that with quads and gets a few more HP. | ||
| Jeff Edison (Euro308guy)
Junior Member Username: Euro308guy Post Number: 249 Registered: 7-2002 |
Nick Scianna can most likely get you individual throttle bodies. If you want to make big power, why not just TURBO it? | ||
| JRV (Jrvall)
Intermediate Member Username: Jrvall Post Number: 1012 Registered: 11-2002 |
Just putting a larger MAFS on an engine won't increase flow unless the sensor itself is a restriction. To increase performace via Flow, the restrictive parts of the 'flow stream' must be addressed. Haven't done any flow tests, however by looking at the 348 set-up, it would appear the throttle bodies are smaller that the MAFS openings. Ferrari addressed Flow problems (ie: F-40-355's)in the very old fashioned way of giving each Intake Port it's own Throttle. Which to date still remains the way to achieve the maxium flow capabilities, besides blowing the air in of course. *note: if someone simply wanted to modify the mixture settings on the stock 348 MAFS, they are adjustable. | ||
| Rob Schermerhorn (Rexrcr)
Member Username: Rexrcr Post Number: 269 Registered: 11-2002 |
If someone wants to experiment, all you require is your MAF physical dimmensions including the electrical connector, then start researching Bosch MAF meters for other applications like BMW. Or, manufacture a larger housing and insert your original guts. Now you'll also need recalibration as the area of the sensor is increased and the ECU doesn't know it. This is simple for an experienced chip burner like Superchips and others. Break out your copy of the Bosch Handbook and get to work....  I suspect that this mod will pay off only if modifying head flow and cam profiles and timing. Call Marcovicci and Wentz, they built IMSA WSC Ferrari 348 engines for Dyson. | ||
| John J Stecher (Jjstecher)
Member Username: Jjstecher Post Number: 373 Registered: 1-2002 |
I would be very interested in this metric as well. However I think that the gains on the Mustang would not ring true in a Ferrari. The MAFS on the 348 is already pretty lean and doesnt restrict air flow nearly as bad as the ones on most domestic cars do. You have to remember most Mustangs are tuned for teenage girls and moms driving them (the target market) rather than all out performance as Ferraris are. I am with Rob I would love to see the tests, I just dont know where to get a set of performance MAFS for a 348 otherwise I would be willing to do the dyno time. | ||
| Rob Schermerhorn (Rexrcr)
Member Username: Rexrcr Post Number: 268 Registered: 11-2002 |
Ernie, it's difficult comparing what works on a Mustang will work on a Ferrari, different engineering goals. The change to a larger MAF will only work if it is a restriction to flow mass. If it isn't, then the upgrade is wasted or may cost power by decreasing quality of the airflow. I have not investigated this mod, it will have to be tested back to back with the OEM one. Perhaps a company does offer this upgrade, I'd like to see the dyno results if they do. | ||
| Ernie Bonilla (Ernie)
Member Username: Ernie Post Number: 556 Registered: 11-2001 |
Us 348 owners are always looking for ways to increase the un-tapped potential of our engines. Now I know the you can get gains from installing a Tubi. You can use a lower restriction air filter like K&N. Then there are the ECU chip upgrades, like PowerChips, Keonig, an SuperChips. Well I was reading in Hot Rod magazine that you can also get performance gains by upgrading the mass air flow sensor. They changed the MAFS on, I think, a Mustang and got an increase of 19hp. So if you add the hp gain from the Tubi, K&N, ECU chip, then if it is possible, the 15-20 hp from a MAFS upgrade, you are looking at some nice numbers. I would think that you could get in the neighbor hood of 360-370hp, with out touching the insides of the engine at all. So has anyone done this to there MAFS, or know of a place that could do it? |