08 s2000 CR with Vortec SC installed

[s2kcrick]

Since having the Vortec SC kit installed, w/Hondata reflash, I noticed that the rpm's are lower than before having the kit installed. When cruising at 70mph, the rpm's were at exactly 4000 when stock, now its 3700rpm.

Is this normal for the reflash w/the SC?

The only thing different between the CR and standard S that could affect this would be the rear wheels and tires. The CR tires are wider at 255, the standard S is 245. The total wheel tire height seems the same, but I'm sure having a wider tire would make it a bit different (taller, or shorter).

Thanks.

[Spunkster]

The reflash cannot affect what RPM you see based on MPH/Gear. This is related to the gear ratio of the transmission, tire size and the differential gearing. The only way this will have changed is if you have changed the transmission, the rear differential, tire size or your clutch is slipping very badly.

[s2kcrick]

I do have some slippage when shifting hard and high in vtec, from 2nd to 3rd only at around 7k to 7.5k rpm. I will be changing the clutch, so you are saying that the new clutch should fix the issue? Nothing has been changed with regards to the transmission, the rear differential, or the tire size.

Thanks.

[Spunkster]

Clutches rarely ever slip when cruising, otherwise you would not be able to even get moving.

A change from 24.8 to 25" tire is a 0.2/24.8 change which = 0.8%.

Therefore traveling at the same indicated speed would lead to a 0.8%
rpm change. 0.8% of 4000 rpm is 32 rpm.

[s2kcrick]

Well, the CR is completely stock, with the exception of the SC. Anything else that could possibly change the RPM's that significantly? Its a 300rpm difference. Would the timing make the difference? Was the timing adjusted with the reflash?

Thanks.

[Hondata1]

Ignition timing at cruise is stock.

[s2kcrick]

Does the reflash change or remove the top speed governor?