3/3/2006 Stradale Dyno numbers/pre Euro Tek

I will post the dyno sheet here later. I wanted to post the numbers for you all. I did a base line dyno run (5) to get firm numbers before I do the EuroTek ECU mod's.

My 2004 Stradale has 5700 miles on the clock, Tubi NGT, Hyper-Flow Cats.

back to back 4th gear pulls recorded
354.1 hp and 253.6 tq
354.4 hp and 255.0 tq
A/F was about 11.5-1

The numbers are non corrected/actual, Wheel HP/TQ, with 60 deg temp, and 29.70 baro.

So if we use the stock US crank HP and TQ numbers they are:
409 hp
275 tq

So with that said, now we need to figure the real HP loss to wheels. Some say 15% some say 18%. So Here are the stock numbers with the loss:

409x.85=348 RWHP 15%loss
409x.82=335 RWHP 18%loss
275x.85=234 RWTQ 15%loss
275x.82=226 RWTQ 18%loss

with 15% loss my Stradale has 6hp and 20ft pounds more than stock and with 18% loss 19hp and 29ft pounds more than stock.

No matter what % you use, the Hyper Flow and Tubi show a gain in HP and TQ. How much is the real question. Sorry I did not have the chance to do a pre/post Tubi Hyper Flow dyno. I will get the chart up later tonight for todays runs. Monday I will send the CPU's off to Euro Tek and by late next week have the end results.

Please correct me if I am doing the math problem wrong to figre RWHP.

 

I was told that Ferrari runs them a bit rich. 11.5 is a bit to rich IMO. I think getting it to a mid to high 12 would be nice. I am sure there is a few HP to be found with a better A/F ratio.

 

I can not seem to get the chart to post. If I can e-mail the chart to anyone feel free to pm me.

 

Sorry kind of forgot about this post. You are right about trying to figure exact crank HP but it is a good reference point.
Here are the pre/post corrected Dyno numbers. I still need to go and do another round of dyno runs. I may be able to do this this week.

Stock WHP (est) 335HP 224TQ
Eurotek, Tubi, Hyper flows 352HP 248.8

Very nice feel, smooth, 9000rpm is so nice!

 

At the end of the day the E-tek was worth about 8-10 RWHP. Although this does not sound like much it is a dramatic change when you drive the CS.

The hyper flow cat and E-tek CPU is well worth the money!

The CS with NGT is loud enough for me and I like my cars loud!
It sounds tuned and not obnoxious.

 

Yes the second set of numbers are with Tubi, NGT. You are correct that the corrected numbers are a big difference. This was due to high pressure and very cold on that day. To make things more compareable I did corrected nubers to corrected nubers. I will post all the nubers (corrected), est. stock, with cats and exhaust and then with E-Tek, cats, and exhaust later tonight.

 

How so? 275 crank is spec. I think 253 RWTQ is not mad low. That = ~309 crank TQ, 34 more than stock!

 

Yes, 248.8 RWTQ after mods, 24 over stock to the wheels.

 

My last nubers posted are SAE corrected. I did dyno the Hi Flow Cat and Tubi first then re-dyno after the CPU. Yes the cost to power ratio is high. Keep in mind there is no other way to get more HP out of the Stradale. At the end of the day 430HP and 309TQ is well worth it to me.

 

From what I was told by a few Ferrari Race Team tech's that dyno their Challenge cars regularly, is to calculate 17-18% loss to the rear wheels with an F1 set up on a 360 challenge/CS. So I based my RWHP numbers as 18% loss. Regardless of the RWHP # the increase in HP #'s are the same.