355 OBD performance chip?

Absolute nonsense its not a turbo car that you an turn up the boost and ramp up VE. It's an NA car.

 

These kinds of "generic" products are total snake oil and in some cases may actually be highly dangerous. If they for instance bypass knock sensing, or fake signals such as o2 sensor to trick a richer mixture, this is going to end in tears. There is only one way to do this kind of thing and that's properly!

 

Does the chip come with a turbo kit perhaps?

 

Once you understand how ecu's actually work you'd never even take a look at this and take it seriously. It could be VERY costly for someone who tries to fit it and ends up with a huge bill for an engine rebuild though.

Its like all those people who claim to have uploaded YouTube videos that make their car run on water for 10,000 miles. Yeah right. oh dear.

 

I mean there is not even variable valve timing where you could throw a ton of advance at it. There is not much you can do let alone 60 hp. Again unless the chip comes with a turbo kit.
I would bet it slows the car down and kills mpg to boot. Who knows wants happening to the cats.

 

All you can do to tune a NA engine like a 355 is adjusting AFR's and ignition timing. On some cars there are modest but real gains to be had, especially when other mods have been done (such as deleting the cats or changing the muffler). I've never heard of chipping a 355 although I know Protomotive (which is a serious place) offers ECU tuning. Anyone heard of a 355 getting live mapped on a dyno and what the results were?

 

Yikes!

"Our Performance Chips work by sending a constant signal through your factory data sensor in your engine that your engine control module (ECM) monitors. This signal triggers the factory ECM to optimize the fuel mixture and timing curve to a more efficient balance. The performance chip is a dyno fuel map, tuned for your specific model vehicle’s air & fuel mixtures, timing, and spark. If the vehicle is turbo or supercharged, the chip will also increase the boost pressure. The performance chip communicates with the vehicle through the OBD2 Diagnostic Port, and will start working the next time you start your vehicle."

Check out this video:

 

Pretty much how engine tuning works.... optimize fuel spark and timing. Like literally if you googled it that's the generic description you would get that's in that video. It's designed for 20-year-olds living in their parents basements going oh my God that's incredible who just really want to believe it


Without variable valve timing and with no turbo there's only so much volume metric efficiency. To make more power takes more fuel and to burn more fuel you need more air and with a normally aspirated engine and you hit a limit mighty quick.

I call total BS on those chips.

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Agreed. Complete BS.
They do stupid things like lower the temp signal to increase injector pulse width, modify the O2 sensor signal to increase fuel delivery, modify the AFM signal to do the same. With later model Fly by Wire cars, they alter the pedal signal to add 5% so you feel a sudden rush of acceleration. If Ferrari could get more horsepower reliably, they would.

 

^ All you need to know.

Other than the 2 355's I've owned and ran on the dyno, most other graphs I see show the same. At least the air/fuel ratio is damn near perfect if not aggressive from the factory.

They weren't setting naturally aspirated specific output records by leaving 60hp on the table with the calibration.

IMO the biggest gain would be raising the rev limiter so you could shift it at the ideal rpm. (though it's been said that was tested and reliability suffers)

 

Did they leave some ignition timing on the table?

 

Not 60 hp worth lol. I've dyno tuned turbo cars where we bumped the boost and never got that kind of HP gain from a stock car. Mainly WRS's and STI's. Need to change turbos and fuel pumps and large exhaust mods to get to that figure. As an NA car, the 355 is lucky if you get any HP from tuning alone. I bet you'll go backwards with that device.

 

I think on the f355, the best way to save some watts is to change the manifolds, remove the cats, and free up the exhaust.
A BMC air filter and... what else ?

 

Depends on you pocketbook. Put a Toda stoker and Motec mgt in as an option on the other end of the scale.

 

I think I been down this road LOL

I got to believe him, must be true.

 

Yes they do. However, the juice might not be worth the squeeze.

If someone can flash the stock ecu with some timing advance, you might get 10 hp . But depends on how much they left on the table.

Larini can do a stock ecu flash.

 

Leave it stock like factory for future $$.. and stuff a 500hp LS in another beater car like I did. You get fcar elegance cruiser. and crazy mayhem that way! [emoji3]

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Do you have Instagram? If so, look for @racetune . His name is Frank. He’s a Ferrari race car tuner and distributor for Motec.

 

The best performance enhancement you can do on these cars is tyres, brakes and suspension setups.

 

Very good question, because Larini seems very rigorous in their products ?