twin turbo or ecu upgrade for 458

Fabspeed has been able to make verified (both by us, and independently) results of huge power increases from an exhaust and tune. I sent you an PM
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That is an impressive looking graph. As a non-technical type person, the common wisdom that I've heard is that reducing exhaust backpressure with free-flow cats and mufflers (or straight pipes) can reliably increase high-RPM horsepower, but at the expense of low-RPM torque. I don't see this tradeoff evident in these graphs. Is there something I'm missing? This looks like having your cake and eating it too.

 

Heffner Perfornace twin turbo is probably the best, most reliable one you can get. It boosts the cars performance to the outstanding 700hp
Heffner Performance
If you're located in the USA that's probably your best bet.
I think the package includes a new exhaust system, too.

 

fill her up with 100 octane and you'll get 500hp at the wheels

 

450 hp stock seems awfully low to me and while I am a big believer in modest power gains from exhaust and tune, I find it hard to believe that the engineers in Maranello did such a crappy job in designing the exhaust system and tuning the car that they left 87 rwhp on the table. That's over 20% more power at 8000 rpm.

I was expecting more like 485 rwhp stock and 510 or so modified.

 

Please send same dyno comparison. Never seen that happen. Best

 

Hey, we got 90Hp/60ft-lbs out of an exh+tune....

 

I don't think the 450 is neither off or bad, I think it has to do with the drivetrain. The SLS which develops the same power, dynos about the same rwhp. The dyno sheets and a few dyno sessions I've seen with SLS cars, have dynoed around 450 too. Mercedes are usually not "lying" when advertising chp. They use SAE J1349 correction as most others do, it's pretty much the international standerd. Don't forget that dyno room enviroments and dynos vary as well. It's pretty much impossible to say, before someone puts an engine on a dyno. What should be considered, is the difference measured on the same dyno. I've never seen any manufacture mention what the parasitic loss on the DCT's are, but an AMG guy I spoke to back in the spring, said that he'd calculate a loss of 19-21% through the entire SLS drivetrain, which is very similar to the 458 drivetrain.
I'm no expert, just my o2's.

+1

I've seen cars remapped for high octane fuel, but that's the only case of increase in power due to running high octane.

50 hp extra makes no sense from upping the octane on an n/a engine. The 458 is set up for 95 RON (91AKI) octane. Octane has nothing to do with the amount of energy available from the fuel. You need higher density for that. And 100 RON will burn slower than 95 RON, hence possibly not utilize all the fuel and just spit it into the exhaust, creating pops burbles, and possibly soot. Unless Ferrari set the engine up for high 100 RON fuel, the sensors can pretty much only make the energy go down, if the fuel is inadequate. To my knowledge, knock sensors will retard ignition timing and o2 sensors will restrict fuel delivery. both resulting in a possible power loss, and in some cases better fuel economy.



Without any experienc with them, it looks like Fabspeed has a nice package for the 458. I'd personally much rather do that, than the turbos, but hey, that's me.

Good luck with it.

 

Here we go again...

 

There is also John Hennessey's TT installation HPE700 Twin Turbo Upgrade | Ferrari 458 | Hennessey Performance . I saw the car but didn't get to drive it. A very neat installation.

 

I'd love to believe there were big gains to be had from a map and set of pipes but simply don't. I've tried if before with other high strung n/a cars . Some 'feel' faster due to throttle mapping but really are not and others I actually think have made the car slower. Not worth it.

 

Yes, it is very hard to get meaningful gains from a high specific output N/A engine. After all one is starting here with 127 hp per liter. Reduced back pressure from high flow cats or test pipes might give incremental gains when coupled with a remap, but at huge dollars per additional horsepower. These measures also tend to reduce low speed torque, possibly affecting driveability.

 

Not just adding 100 octane though. "Tuning" is a bottomless pit depending on who is doing it and if only ecu or more. I was responding to adding a different octane. Best