Review on AEM 21 8117DP Polished Intake System by Juan Grayson
Disappointing Emission System Upgrade
I recently purchased an aftermarket emission system for my automotive performance needs, however, this upgrade left me quite unsatisfied. As a result of my tests, i determined that it did not improve the performance of my car and caused a noticeable decrease in gas MILEAGE. The only positive aspect is the polished look it gave to my engine. Unfortunately, the cons outweigh the single pro, and I do not recommend this product..
- Improved engine performance and horsepower
- Requires professional installation for optimal performance
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