Air intake horn
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depends on what year series...
3rd gen and later: yes an aftermarket horn is better than stock 3rd-4th gen horns.
2nd gen 24v: no. you might see a very slight improvement aftermarket vs stock, but nothing significant enough to justify the cost. 2nd gen 24v horns actually flow a LOT more (as in about double the flow) than 3rd gen and later intake horns...
3rd gens actually have to go to a 2nd gen 24v intake horn, or aftermarket to run twins...
3rd gen and later: yes an aftermarket horn is better than stock 3rd-4th gen horns.
2nd gen 24v: no. you might see a very slight improvement aftermarket vs stock, but nothing significant enough to justify the cost. 2nd gen 24v horns actually flow a LOT more (as in about double the flow) than 3rd gen and later intake horns...
3rd gens actually have to go to a 2nd gen 24v intake horn, or aftermarket to run twins...