360 CS Dyno Run Results

this explains why the porsche gt3 with less power, more weight, std tranny, and $100k less was faster around track in c&d mag last month! seems pretty obvious cs stats are overstated by factory. same thing also seems to happen to ford, jag, mazda. i dont think need to worry about porsche's claims though. when a x50 tt wins the 0-150-0 test its because its making more than claimed 450 hp. just reconfirms how i love fcars and hate f factory!

 

I took the liberty of placing two pointers on the dynorun.

The red indicates where peak TQ occured, the blue one indicates where peak TQ is supposed to have occured. ALong with the mission ponies up top, it seems that the engine is missing poke down low also.

 

Thomas,

Thanks for the info, clearly dissapointing although I did hear from my dealer that the 1st US cars were held up because they did not meet the noise requirements, the fix may have had an impact on FNA's original power expectations. Like you I will be getting my CS to replace my current 360, is it worth it? can you tell the difference in the engine? more responsive? For what's its worth my 360 (with tubi) pulls great all the way to the rev limiter, never feels lean.

 

Hmm...this is sort of sad...I was hoping we'd see a 360 with all the stops pulled that might be able to drop HP in the 370 range...I think i may have been a bit off...Anyhow, I cant beleive that when ferrari tuned the 3.6 and bumped the compression, they got only 320ish, while Allan heard that 335 is possible sans variable valve timing and smaller engine! wow...

 

"Allan heard..." Why am I not impressed? Until this mythical 355 engine is run on the same dyno as a CS I wouldn't lose any sleep over this drivel.

Gary

 

Gary, i can assure you this is not drivel. It has been posted here before, and someone else also mentioned 320+rwhp 355's. I dont see the big deal though, anyway you look at it... 355...360... disappointing.

 

Moral of the story here is that Ferrari realized after seeing gallardo, ford GT etc, that they are gonna need to bring out the big guns, this will take a little time, and the stradale is really just to hold their position not better it, I guess its all you can really expect with the same engine as the standard 360, with a small compression bump. Maybe an ENGINE dyno would clear things up once and for all.

 

My 355 and others tested have about 260rwhp. One has challenge exhaust, no cats and Motec. All on the same dyno and insignificant difference. That's the only way to compare.

 

LOL! You better check your dyno. That would mean a stock 355 makes around 230rwhp! LOL That would be a 39% drivetrain loss! Check this thread and others, others have dynoed over 320rwhp with basic mods.

 

Even making 260rwhp, after your mods, and the stock quoted 375hp, thats a 30% drivetrain loss. Using your numbers, we should all sue Ferrari, because a 355 then really makes about 280hp instead of the quoted 375 using a standard 18% loss.

 

The numbers you quote sound pretty much spot on.

 

I wouldn't even begin to try and explain the dyno numbers being discussed yet would suggest enjoying the car cause dynos don't mean that much..

Its how fast and beautiful your car is.

Truly one of the worlds best.

Congrats on the car!

JB

2001 ZO6 w/ Halltech Tunnel Ram,
FLP headers,3.73 Getrag Rear,2004 Z06 shocks,Shaner S2 TB,Hurst

 

That was my point...dynos read differently. esp chassis dynos. I know that there was nothing wrong with the 4 cars tested. Showed that modifying a 355 is a waste of time as far as I'm concerned.

 

By the way...2 of these 355s WERE stock.

 

I can take the fact that the US Stradale isn't quite as light as Ferrari claimed. I can even take the fact that the US Stradale may not sound as good as the European cars. But if the US Stradale output was well and truly reduced from 425hp to 409hp, they can keep it. I will let my dealer sell the car to somebody else when it arrives.

Paul

 

On octane, I can tell you what I have seen done. Changing to high octane race gas often results in a lose of hp....until the mixture is corrected, then it makes about the same, sometimes a little more. Most race fuel is oxygenated and has god knows what else in it, so the volumetric flow (how EFI meters) changes, it also has a different specific gravity, so carbs get messed up too. It really has nothing to do with the octane as far as I can tell. Most racers just pick a brand of fuel and stick with it so all the tuning they do remains constant, no one like surprises at the track

I have also seen the same bike dynoed on different days on different dynojet dynos with the numbers agreeing within 1%. Not bad. BUT, I have also watched "tuners" run a customers bike on their dyno and yeild great results....that do not repeat on anyone elses dyno. It is quite easy to make a dyno give the number you want to see and I have no doubt that shops do it.

 

As a general rule of thumb, I don't put much stock in dyno numbers. Dyno tuning has it's place in an environment where you establish a baseline and make changes, then do another run to see if you improved or not. But trying to compare Car A run on Dyno B in City C to Car D on Dyno E in City F is just so much crap. My opinion anyway.

Gary

 

Well i have not dynoed my car, but i can tell you that the mods i performed DEFINATELY made a difference in performance. Stock 355's should make about 300rwhp.