Smog Block Off Plates

About the Product

Smog Block Off Plates

Yamaha R1 (1998-03)

Smog Block Off Plates are designed to seal off the ports on the cylinder head used by the air injection system (a.k.a smog pumps or AIS). Once these are capped off the air injection system can be safely removed. These Smog Block Off Plates are made from machined aluminum. There are two reasons why you want to remove the air injection system from your bike; 1. If you are using your motorcycle on a closed course (racing, track days, etc.) you will want to remove all unnecessary equipment from your bike for reduced weight and ease of maintenance. 2. To get an accurate Air:Fuel (A/F) ratio when dynoing the bike. The air injection system pumps fresh air directly into the exhaust stream in order to burn off any unused fuel. Unfortunately by doing this the A/F ratio is thrown off by the extra ?fresh air? in the exhaust stream. By removing the air injection system you can achieve an accurate A/F ratio. Sold set of four

Complementary Upgrades:

	Brisk Sparkplugs: Since you're accessing your engine compartment, upgrade to a set of Brisk Sparkplugs! These premium spark plugs add up to 1.5hp for 600cc, 2.0hp for 750cc and 3.0hp for 1000cc engines. Hayabusa and ZX14 owners, expect up to 5hp for your bikes!
	BMC or K&N Air Filters: Air Filters should be upgraded at the same time to yield maximum performance. These performance air filters allow significantly more airflow into your engine giving it the chance to breathe. They are also easily cleanable and never have to be replaced saving you money in the long run. Bonus!