HELP! Are my injectors to small for the boost I'm running?

[joe_mama71]

I have a Kenne Bell 1.7 with the Big Tube Kit, and the Boost a Pump. The chip is a diablo chip that came from Kenne Bell. I am running a 10lb pulley.

I just had the car dynoed at Modular Powerhouse in Marietta, GA and was told my A/F was between 15 to 13 up to 4500rpm and then down to 12 after that... Kenne Bell claims that with the 10# pulley and the Big Tube Kit I am makeing 11# boost and that it's too much for the 36lb injectors.

Any opinions??

 

[Gearbanger 101]

11psi with a Kenne Bell should put your right in the 420-430rwhp range which is still within the limits for a set of 36lb injectors although that's probably got them up close to the 85-90% duty cycle range (which isn't ideal). A set of 42's wouldn't hurt, but MPH should be able to tell you for sure if they're the ones doing the dyno tune.

 

[Jakes]

....snip....and was told my A/F was between 15 to 13 up to 4500rpm and then down to 12 after that...

I'm running 10lbs of boost on my KB and my tunner recommended and installed 42lb injectors.

Also, watch that A/F! Anything over 13:1 at WOT you're playing with fire. I have mine tuned to 12.5:1 through otu the rev range.

 

[03ghoststang]

from what you stated you do need to upgrade injectors to 42lbs

 

[Venom_Nitrous]

I personally think this is a good deal, unless you already have a new MAF. If you do, they also have a good deal on 42 lb'ers.
http://www.buyfordracing.com/shop/product_info.php?products_id=532