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Old 12-22-2012, 10:23 PM
Jamesonsviggen Jamesonsviggen is offline
Officially Welcomed to the 'Fest
Location: Michigan
Join Date: Jun 2007
Posts: 3,259
Mein Auto: '98 M E36/7:'06 Saab 9-5
Originally Posted by krash View Post
I guess different people will interpret this differently. Only 3.5 MPG difference is really remarkable when considering that you get 45 lbs more max torque and 60 more HP with the 335.

You basically get 25% more HP with the N55, and the N20 only gives you less than 10% better gas mileage.

Now, with all that said, there is nothing wrong with the N20. It's a great engine, and I'd be perfectly happy with a 328.
Wheel hp is what matters, not crank ratings. wheel hp is 10-15% apart, about 240-250 for the N20 on a Dynojet and the N55 at about 270-275. That is the same amount they are separated by MPG.

E36/7: Dinan/RMS stage 2+ blower@11-16lbs of BOOST! 18" BBS LM's, too much more to list
F30: 6mt, SOLD

'06 Saab 9-5 wagon 5mt LSD, clipped turbo, 19psi, 400ft lbs of tq
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