Quote:
Originally Posted by Jive Turkey
also i think when it comes to our NA motors. the difference between the best researched EL header vs borla's UEL/any well made UEL will be a small amount, if any. on boosted subaru's EL makes a huge difference, but here i think it will be a mere handfull of WHP, and in many cases it will all fall upon the tune.
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I'm not sure there's really a difference at all on our cars. Like you said the well designed uel is an improvement. According to borla (always skeptical of mfr claims) the difference of their el and uel (good comparison as both are an improvement, well engineered and built by same people) was minute. Like <2 HP difference. Both saw gains across the torque curve over stock as expected. But the 2hp was to the uel down low and 2+/- up top was the el. So maybe a tune would accentuate characteristics? My experience with air cooled vw says it doesnt matter. But there's about 80 years of engineering difference there haha