Installed 355 Chip

Interesting! This is the first time I have heard of anyone changing the chip, keep us posted

 

Rev limiter is now 9000 RPM?

This should be good!

Looking forward to hearing your thoughts Greg. This could be the best $600 you will ever spend on your 355.

 

9k would be a scream...but there's a reason they choose 8500 - because the valvetrain becomes unstable above 8500. More spring surge, higher stresses, etc. For the occasional blip above 8500 while racing it should be ok, but I wouldn't spend too much time up there!

 

Actually most after-market chip manufacturers require that the ECU chip be replaced (either you do it or you have to send in your ECU). I think only Imola Racing and one other tuner in Italy (I can't remember the name) have "cracked" the Bosch Motronic 5.2 code so they can re-flash the original ECU EEPROM. The PO of my car had the chip sold by Nick's Forza Ferrari installed in my car. Sorry, I haven't had it put on a dyno. I notice a little more power (especially in the mid-range) in my car, compared to other 5.2 F355s that I have driven. The redline is also increased in 9000, but I NEVER go above 8000. Even with the cut-off, I'm too paranoid. This chip is around $2600.00! OUCH! IMO, the small increase in hp/torque is not worth this kind of $$. However, $600.00 is MUCH more reasonable.

 

Really?? But didnt Ferrari build a 355 for Schumi that had a 10,000 RPM redline?? I also remember it had different cams in it. Or something like that. Not too sure if it had a different (stronger) valvetrain/springs, but it doesnt get any more efficient/stronger than an overhead cam/hydraulic bucket setup.

I am sure it can handle 9000+ RPM, but they lower the RPM for engine longetivity. RPM's usually makes more power........but wear parts out faster.

I could be wrong and I will let the experts Brian, Dave, Ace add to this if they care to do so.

 

Check this out Jay. Johan posted this in another thread recently.

Step 4 kit, 9500 RPM without any mention of any valvetrain mods/parts in the kit.


What about Imola racing
They have these four steps for the 355
I would really like to know what the 355 engine sounds like at 9500 RPM!

Here is the link to their online catalogs: http://dimex-group.com/en/home/catalog.html

Step 1 - 309 KW / 420 HP - 380 Nm max rpm 9300
Sports exhaust made of stainless steel, modification of ECU, optimized intake air flow,
sports air filters

Step 2 - 316 KW / 430 HP - 380 Nm rpm 9300
Sports exhaust made of stainless steel, modification of ECU, optimized intake air flow,
sports air filters, 200 cells sport catalysts

Step 3 - 327 KW / 445 HP - 384 Nm rpm 9500
Sports exhaust made of stainless steel, modification of ECU, optimized intake air flow,
sports air filters, 200 cells sport catalysts, patented fuel cooling system

Step 4 - 331 KW / 450 HP - 385 Nm rpm 9500
Sports exhaust made of stainless steel, modification of ECU, optimized intake air flow,
200 cells sport catalysts, patented fuel cooling system, kevlar carbon airbox with
sports air filter system

 

They most certainly did.

1996 TDF blue 355. Tuned ECU to 10,000 RPM, special 'high lift cams' which gave his car 450 HP.

 

Wow.......I wonder where Schumi's 355 is now.

 

Was sold to a collector in 2004 for 42,000 pounds, apparently.

And I think it was a 1997 355, not a 1996.

Dont know where it is now.

 

True, I thought about the Schumi 10k car before posting but I have no idea if they made valvetrain component upgrades. Maybe the 355 is 'safe' at higher rpm, but I'm sure the guys selling higher rpm kits don't have a clue what the springs are doing above 8500. The only way to prove it is to put a strain gauge on a spring and actually measure stress up to and above redline. I've seen some high speed videos of NASCAR valvetrains absolutely going crazy above 10k rpm - of course all depends on component masses, etc.

 

here you go: http://www.ferrari355registry.com/Ferrari_View.asp?pVIN=105416

VIN Serial Number: 105416
VIN 1st 11 Chars: ZFFXR42B000
Year: 1997
Model: GTS
Trans Type: 6spd
Exterior Color: Le Mans Blue (Blu Le Mans)
Interior Color: Magnolia
State: Foreign State/Province
Country: Belgium
Additional Information: Factory built for Michael Schumacher /Car was a present from Gianni Agnelli while his last season in Benetton
/ Custom motor work done by factory, special cams, chips, etc / Assembly #22356 / Roof painted to match car

cinque

 

Are those Nascar engines pushrod V8's or overhead cam now?

Our V8 Supercar Series here is VERY popular. Similar to your Nascar series in the US I reckon.

Anywho, they use 5L, 600 HP V8 pushrod engines in the V8 Supercars. They are VERY primitive, as we all know. The V8 Supercars have a 7500 RPM limit. The bottom end can spin to 10,000 RPM reliably, but the top end cannot handle sustained hard RPM's over 7500 RPM. Pushrods bend, roller rocker posts break out of the heads etc......

So to save blowing engines up and being un-reliable, they make every team ensure their engines are rev limited to 7500 RPM.

www.v8supercars.com.au

 

Excellent! Thats him! Thanks Cinque.

 

Yeah I know, completely apples to oranges comparison. Old school, pushrod V8's with carbs! But serious development goes into each component, they can actually repeatably measure a 1 hp gain on dyno.

cinquevalvole - nice find on the 355 registry!

 

I looked into a Fabspeed chip and I was pretty impressed with the result. I've occassionally glanced and seen 9700 rpm after installing. I can feel a mild improvement in performance. Next week, the car is being dyno'd at Competizione.

 

9700 RPM!! Wow!

Can you please post dyno results next week mate?

 

Hahahhhahhahaaahahahaaaa ..............!!!! Pap you are the man !!!!!! I think this is the first time I have seen anyone respond to their own post as if it were another person .........lol ...... ............. ......... refer to post #8

Just raising the redline will not automatically make more HP. The current factory cam timming is optimised for the 8250 peak HP range. If one wants more power at higher RPM, the intake cam timming needs to be retarded and the exhaust cam advanced in accordance with the port velocities. Though one will lose lower RPM power when the cams are tuned for higher RPM.

 

You're absolutely right, but my K&N's, fabspeed headers, hyperflow cats in conjunction with my Tubi should compliment the chip nicely. Unfortunately, I don't have a dyno sheet with a stock 355 - maybe someone could find one. By having a higher redline, I'm just able to stay on power in any gear a little longer than any stock 355.

 

Correction to my post: That 8250 number is reference to RPM .......

Those goodies should help ........ different dynos will read differently ........... the only real way is to validate changes on the same dyno .............

What year is your 355?

 

Thanks mate, but Im sure I have done it many times before!!

 

That is what makes you great PAP !!!

 

Nice find...