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SN65 Dyno results

SN65

Regular
Oct 28, 2004
300
0
Yesterday, we had the SN65 out at Finish Line Performance (Naperville, IL) for a dyno session. We made 7 runs, made a few adjustments and ended up with a max rear wheel power of 402.4 and a max rear wheel torque of 396.4. This is an increase of about 40/40 over the original factory numbers.

We found that the original plugs were not up to snuff and would randomly miss causing a 30 to 50 HP drop per incident (miss). After changing out the plugs and fine tuning the fuel curve, etc... we ended up with a much smoother operating powerplant.

It was a fun time and we are now looking to up the power to about 550 RWHP with 550 RWT. We are talking to Whipple about a blower upgrade and the expected results.

Bob
 

Flyn

Go ahead. I'll catch up.
Moderator
TCG Premium
Mar 1, 2004
68,053
27,986
Selling homes on the Gulf Coast of Florida
Sounds good, Bob. A Whipple will give you an easy 550rwhp. You will need some supporting mods. 60lb. injectors, a SCT 2400 MAF or a MAFia, A Kenne Bell Boost a Pump or dual fuel pumps. The stock fuel system won't keep up with a Whipple. You should be OK at 550 on the stock bottom end but if you go higher, it's tougher on the internals.

Kenne Bell superchargers do the same as the Whipple power wise [you'll get guys who swear one of the two is better but they both make similar power] and the KB makes a wicked whine at idle and full throttle. Something to keep in mind if the Whipple doesn't get installed. ;)
 

gnxs

Electron Powered
Apr 26, 2004
8,930
256
SN65 said:
Yesterday, we had the SN65 out at Finish Line Performance (Naperville, IL) for a dyno session. We made 7 runs, made a few adjustments and ended up with a max rear wheel power of 402.4 and a max rear wheel torque of 396.4. This is an increase of about 40/40 over the original factory numbers.

We found that the original plugs were not up to snuff and would randomly miss causing a 30 to 50 HP drop per incident (miss). After changing out the plugs and fine tuning the fuel curve, etc... we ended up with a much smoother operating powerplant.

It was a fun time and we are now looking to up the power to about 550 RWHP with 550 RWT. We are talking to Whipple about a blower upgrade and the expected results.

Bob

You have a pic. of the dyno sheet.

I've seen some pullied Cobra dyno sheets from FLP that have downright dangerous A/F ratios. :eek:
 
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