355 Project

I am curious about the existing 363 RWHP claim. Where are the charts and pics of those upgrades to support that claim below??

 

What is the suggested peak horsepower ouput for a 355? The only reference I have is Evo magazine which says 375 BHP. I understand that there is likely to be some HP loss over time, but am I missing something, or is the Evo figure wrong, or at the flywheel rather than RWHP?

Anyways, looking frward to seeing the pics of your finished car 355bnut - my breath is considerably baited, as I'm sure are many others around here!

 

375 BHP rating is at the flywheel.

 

There is no lose over time at all. If ya read all 5 pages of this thread you will see that on page one i have posted my dyno results with 328WRP. And the car has now 46k miles on it.......and its a 1995 model......with original headers......and the original valves. It has a De-catted Capristo and also runs a Hamann chip that re programs the fuel/power curve. The standard 355 will read about 313-320 RWP.
So i have to be the first one to say that i am sorry but there is NO WAY 355nuts first reading 363RWP with only a Tubi system and hyperflows on the car. Sorry dudes but facts are facts, let alone now talkin about highter power readings of 390WRP after the mods. Either the dyno is reading very badly or some one is winding us all up. Remember 390RWP will be approx 450BHP at the crank.....with just an exhaust and chip change......come on...please. Think about it, a F430 is 490BHP at the crank!!!!!!! I will be the first to eat humble pie if this is proven but then again i do have lunch with Elvis Presley once a week
I have wrote this yet again incase as usual any one forgets or does not read the first page of the thread

 

I suspect the dyno is out or has a conversion factor to show estimated CRANK hp on the charts, and this is where the 363 comes from. This is less than stock, which is exactly what you get with a tired engine and ill-conceived "performance" improvements - or an erroneous conversion factor

There is no way this is a wind-up as Harmony Autosport are involved in these claims. IMHO no business would jeopardise itself with claims like this and then turn around to say the claim is a joke.

Again, some pics and charts would be nice. Especially of the interior, as looking at the seats, it should be VERY nice.

 

We need to see a chart prior to the installation of ANYTHING, including the chip. This will attest to the accuracy (or otherwise) of the dyno itself.

 

Well, look at it this way... You are claiming at least 40 more hp than a 355 Challenge with a fully programmed Motec that has been tuned on the dyno over a period of years to extract every last scrap of power. you are further claiming that you expect to see almost an additional 30 hp just by changing headers and putting in an "X" pipe that by all estimation in another thread (with more expert minds than in this one) will REDUCE power by its design, and possibly only increase it IF there is less overall restriction to flow.

Unless of course you are running it on gasoline with a decent percentage of nitromethane and the "not all chips are created equally" chip advances the timing to extract the not inconsiderable benefits that NM provides....

I would love to be proved wrong on this, as I will be putting these very same add-ons onto my car (as will many others) and enjoying the same 390+ RWHP (which is actually closer to 480 crank than 450...) To think that Ferrari screwed up big time with the 355 - leaving an easy to get 100 hp on the table

 

Er lets get this straight, i dont recall Harmony sports claiming these big big figures. I see 355nut doing this, so lets not use Harmony as a sheild ey
Bottom line is that nothing apart from my dyno sheets have been posted up as yet. So i need to see dyno sheets for the said 355 with 363 REAR WHEEL power ( 35 bhp more that mine at the rear wheel) and or also i need to see another dyno sheet with 390ish REAR WHEEL power (58 bhp more than mine). The sheets must id the car as a 355 and if posable a before dyno sheet as well. Am i asking to much? You say "the results are the results", and thats true but so far the results are only mine that are posted.......And all this power just from an exhaust system and a chip!!!!!! If that was the case some one would be a very very rich man indeed.

 

I am usually on optomistic side when it comes to mods. But like chaa said the hardware is not there to support what sounds like inflated claims. I will agree that there are improvements to be made on the entire exhaust and intake system. There are alot of people here with hyper-flows and tubi or capristo. I have yet to see any of them making 363RWHP.

I have made custom exhausts for p-cars in the past and the biggest gains during that time were around 7%-10% "max" increase for a normally aspirated motor. Depending on the original exhaust design and stock engine output. Those numbers were after logging some serious hours with the R&D.

As for the wind-up, it may be possible 355nut got some figures crossed. So I will wait to see what harmony comes up with.

 

The "experts" on the other thread include actual engineers and an owner or 2 of a performance exhaust shop.

But I digress - I have set up a poll where we can vote on how we think the 363+ is possible.....

http://www.ferrarichat.com/forum/showthread.php?t=129010

 

Everyone, don't forget to vote!!!

 

You mean this thread? http://www.ferrarichat.com/forum/showthread.php?t=120848&highlight=355+dyno+chart

Ummm.... the only chart actually on there is MINE, with links to Peter's and chaa's. NADA from Harmony or you. In that thrtead we were promised charts within 2 weeks of 9-13-06. Now, i know that stuff happens and delays occur, but that's long enough to get a NOS system stealthily installed too!

Just pulling your chain

BTW the chart for my car has an error in it - it states 96 model, when mine is actually a 95. The license plate is correct though (SOOTIE).

 

You are right you are reverberating those numbers on that thread. Everyone was waiting for dyno sheets and pics back then and none were posted....then or now.....

 

What extensive work are you talking about?? You said all that was done was to fit an exhaust system and chip in the standard ECUs.

 

Yeah, does he have intake work??? The insides of the 355 engine are pretty well optimised as is.