Improved acceleration with Fabspeed headers & exhaust?

I believe Ferrari leaves very little performance on the table for aftermarket performance companies to claim.

 

+1

 

The thing with the aftermarket exhaust systems are they don't have to comply with the strict restrictions. I used to have Akrapovic Evo system on my E92 M3 and it really gives additional 22-25 hp and 30 NM of torque BECAUSE the system doesn't have primary cats. So instead of 400cell primary cats + 200cell secondary cats of the OEM system, Akrapovic EVO has no primary cats (straight pipes) + 100cell race cats. As a result, here comes the extra power.

On the other hand, unless Fabspeed eliminates cats, there can't be much power to have. Also don't forget that tuning companies advertise the gains but these gains are not at the peak power most of the time. So when they say you gain 20 hp, it is not additional 20 hp over peak power, but it is 20 additional hp somewhere in midrange.

60hp power gain over 458 engine means 630hp which means 140hp/1000 cc. It is highly unlikely.

Do it if you want to lose weight and to make a change in sound. But it is almost imposible to get extra power from an already high power (127 hp/1000 cc) NA engine just with a new exhaust.

 

Partially I am with you. But I think that you can generate some extra power with the complete exhaust system at the 458 too. Of course not 30 hp or more, but 5 till 10 hp can be possible because of kats, air stream, backpressure, lower temperature at the airbox because of good thermo-insulation of the exhaust-system, etc. But what I am sure is, that because of this changes, the torque can rise up by 30 till 40 Nm. And this can be also interesting, isn't it?

Ciao - Webber45

 

Thank you for your interest in our products. Although we have proved that we can make a significant increase in power, it is difficult to convert that data into an accurate performance gain. Adding 60 hp and reducing weight by 25 lbs will certainly decrease the 0-60 times and 1/4 miles times by a tenth or two, but an extreme change in performance is unlikely. To test this, we would need a drag strip and we would need to replicate the exact conditions of the before and after runs.

However, for most customers, the seat of the pants increase is usually enough to validate the power increase. We already offer more data than most aftermarket companies, and we would love to supply performance figures, but it is too difficult. Plus, most of these cars are not owned by the company, so we would need to get the OK from the owner of the car before we take it to the track.... which is not always going to happen.

Please let me know if you have any other questions. Thanks!

Jeff

 

We have sold many sets of our 200 cell sportcats (factory is 750 cells per sq. in.), and we have recently introduced a cat bypass system. We have not had a chance to dyno test the cat bypass yet, but I would guess it will make slightly less power in the lower RPM ranges and more near the peak engine revs. Our headers and sport cats have been proven to make significant increases in power. The mufflers do not make much difference in power, but they save a lot of weight which is important to some customers.

Please keep in mind that our gains are aided by an ECU upgrade which is good for about 25hp on its own. Please let me know if you have any other questions. Thanks.

Jeff

 

5 till 10 hp is possible. This is why I said "almost" impossible
And again, for the big gains, you have to eliminate cats which is illegal in most states/cities.

 

60hp on NA car with just full exhaust ? on a Ferrari??
That's highly impossible.

 

I develop camshafts for racing motorcycles hence "cam man". I can assure you that the engineers at Ferrari didn’t drop 60 HP on the dyno room floor and forgot to pick it up. We develop cams for Hayabusas, CRF250 Hondas etc... Any highly developed engine such as a 458 will have nearly every bit of power "squeaked" out of it. Finding 10% more power is impossible!!!

 

An aftermarket exhaust on a NA Ferrari is mostly for aural pleasure only. For pure speed and acceleration, that's what modified 911 Turbo and Nissan GTR are for.

 

I have a friend that does heads for 1 liter bike motors that go into small race cars. I generally takes a production 1 litre bike motor making 150 HP (Yam, Honda, Kaws, Suzzies), does the valves (no headwork allowed), retunes the ECU for race mixtures and timing, balances the crankshaft, carillo rods, changes the velocity stacks and ships them out the door at 212-215 HP (on race gas). The tuning takes place on a dyno with an eddy load device so he can measure stuff at full throttle (or any throttle position) and tweek the motor at that RPM untl it runs correctly. So finding 10% power is not so impossible--he is getting 30%.

Now, he did learn his trade by building Infinity IRL engines for a decade.

Finding 10% and remains street legal is probably outside of doable.
Finding 10% and remaing street legal for the 120K mile emission warentee is unlikely.

 

I should have emphasized that by changing only 1 item (ie, cams, exhaust) it is not possible! If you changed the cams, porting, compression, ECU etc then of course you can but here we are only talking about a pipe/ecu change. Ferrari is simply not going to leave that kind of power on the table.

 

You are thinking too rationally because you are an engineer. Just think like a Marketing guy, and you can make up stuff!

Here is what Porsche did with their factory Powerkit to increase the power of the 997 by 26 hp. This was on a 3.8 L producing 381 hp, a motor producing far less hp per liter than the 458.

Revised cylinder heads
Carbon-fiber air cleaner housing
Aluminum air intake
Modified exhaust manifolds
Revised ECU

 

hahahah so true.
I especially like the "intake system".
When someone try to sell me a "intake system I always response with "oh you mean a tube and a cone filer? "

 

Hi to all,

yesterday I picked up my F 458 Italia from Capristo / Germany with some modifications.

We changed the airbox to Capristo's CF-airbox with bigger volume and the complete exhaus-system to Capristo exhaust-system, inluding the Kats, manifold, tubes and baffles, all together with the special Capristo thermo-insulation.

The power (hp) has not increased significant, but have a look at this phantastic torque!

When I drove home, the sound was great and I was able to feel immediately the much higher torque, especially at lower RPM.

Nothing is done with electronic or something else; just the exhaust-system and the airbox!

Regards - Webber45
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wooo post some pics and clips plesae, love to see and hear that beast!!

 

Do you have a screenshot of the "before" torque and HP so we can - "have a look" THX.

what was the peak torque before the change ? did the RPM of the peak change ?

 

you are assuming that they are trying to 'find' the extra power. of course they dropped the hp on the dyno room floor, they left it there on purpose. the truth is that the full on output (lets just say 630hp), maximum output given reliability & emissions, target etc, is known long before the first car with 570hp, is put into the showrooms.

most car companies use the same trick...the lowest output is given to consumers first, then miraculously 5 years later, a 'Scuderia' version, spec R, etc, etc, etc, comes out and they 'find' an additional 30hp, 50hp, or whatever amount. reality is that it was always there the whole time, only the ECU and related items held them hostage before the lifecycle of the product evolved far enough along so that customer demand would meet up with inevitable increased cost of the 'updated' car

 

No, Sorry. We did not measure it before. We just can compare with the original diagram. It should be 540 Nm at 6500 RPM, as far as I remember.

But I know the car now since appr. 6500 miles. I can clearly feel the higher torque, especially between 3000 and 6000 RPM.

I will try to make video during the weekend.

Ciao - Webber45

 

Why then measure it after ? Thanks.

 

It was my wish to know the exact data of my baby. I know that it doesn't show the increase because of the modifications without a "before-measuring". But it's nice to know now, that my baby brings more than 600 Nm on the road. Equal if it is from the modifications or from my very efficient manner of driving ;-) I wanted to tell my pleasure to people with same or similar intensions, hopening that they will share my pleasure. This is why I posted the diagram

It's measured on a Dynamometer, where all 4 wheels are turning. The front-rolls of the dynamometer are connected with the back-rolls. So it simulates as good as possible a drive on the road. The datas are measured from the power-input into the rolls of dyno. It was with the 6th gear. On the diagram you can see that the setted efficiency was 92%. I think that means, that the drive train loss was inputed with 8%, isn't it.

Regards - Webber45

 

I agree. Look at the Aston's Vantage. Their 20 HP powerkit is due to only improved air intake and tune. Porsche's Carrera 30 HP powerkit is due to improved air intake, exhaust, and tune.

Intake, headers, cats, and tune will definitely increase HP. How much is variable, but I don't know why there are so many doubters.