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Best SMEC?


Jeffn
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Best OEM SMEC is the '89 Daytona T2 - PN 5235069. This is has 12 PSI boost and better fuel, boost and timing curves. Raises HP/torque to 175/200.

Best aftermarket (that I know of) are from FWD Performance. They offer 14, 15 or 18 lb. of boost. Go to fwdperformance.com for specs and info.

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The Mopar Performance unit has been NS-1 (discontinued) for several years. I've not seen one for sale (on SDML, eBay, etc.) for a long time. The boost is raised to 14 lb. and the ignition timing and fuel curves are improved over the T2 unit. The P/N is P5249019.

Hope this helps.

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There's a Stage II SMEC for the '89 8V on eBay - item no. 7986093334

I've had one of these (from this seller) in my '89 for the last couple of years and it appears to be about the same calibration as the MP Stage II for the '89s.

Hope this helps

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There seems to be some confusion about just what an MP unit is. The Mopar Performance SMEC's were not new but DOA (warranty) units that had the ROM replaced with the MP-calibration (increased boost and altered fuel/timing curves) ROM. IIRC, there's quite a bit of info about this over on Gary Donovan's 'Dodge Garage' website.

The existing ROM cannot be 'reflashed' but has to be replaced with a new, recalibrated one. Therefore, you can't identify a 'reflashed stocker' by just looking at a picture of the SMEC - they all look pretty much the same.

The list price for the MP SMEC (when it was available) was $295. If you could find an NOS unit laying in some dealer's parts department and assuming you get 25% discount, you'll still pay about $220 for a 15+ year old calibration.

As far as the '40 HP claim' goes, it's not far fetched at all. The TC's T2 11 psi SMEC is rated at 160 hp while the 14 psi MP SMEC claims 200 hp. With no other changes, the improvement certainly feels substantial.

Remember that the MP calibration is 15+ years old and is hardly the 'ideal'. It's certainly an improvement over the stock TC unit but, if I were in the market for a T2 SMEC today, I'd choose a more up-to-date 15 psi calibration from FWDPerformance, which has a number of drivability tweaks and improvements you won't get with the Mopar Performance unit.

Hope this helps.

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