370Z long tube headers ---> 350Z HR?
02-19-2012, 08:22 PM
#163
Oh yeah, this is one of the most over looked things on a NA motor.
on my stock injectors i hit 91% DC at 6900 rpm.
"they say" not to run a DC above 80%.
Once you are in the 280+WHP stock injectors are pushing their limits. sure you can make 300 whp on a stock injector if you want to push the injector to its limit.
Ive got 380's installed but i think 440's are a better fit just because they are much more common.
Go with 440's and you will not have any issues maxing them out NA.
02-19-2012, 08:32 PM
#164
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Oh yeah, this is one of the most over looked things on a NA motor.
on my stock injectors i hit 91% DC at 6900 rpm.
"they say" not to run a DC above 80%.
Once you are in the 280+WHP stock injectors are pushing their limits. sure you can make 300 whp on a stock injector if you want to push the injector to its limit.
Ive got 380's installed but i think 440's are a better fit just because they are much more common.
Go with 440's and you will not have any issues maxing them out NA.
on my stock injectors i hit 91% DC at 6900 rpm.
"they say" not to run a DC above 80%.
Once you are in the 280+WHP stock injectors are pushing their limits. sure you can make 300 whp on a stock injector if you want to push the injector to its limit.
Ive got 380's installed but i think 440's are a better fit just because they are much more common.
Go with 440's and you will not have any issues maxing them out NA.
thanks alot SurraTT for your info glad im not the only one... thanks to my good friends at SPL PARTS had injectors laying around and ended up being 440s that im going to install...
02-19-2012, 08:51 PM
#165
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Lots of good info here. I didn't know the stock injectors maxed near 300 whp, I'll have to look into this as I'm looking to go for more NA power soon here.
Interested in seeing that dyno chart with the PPE longtubes and intakes. You gonna get that posted up tomorrow right?
Interested in seeing that dyno chart with the PPE longtubes and intakes. You gonna get that posted up tomorrow right?
02-19-2012, 09:03 PM
#166
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as for now my car is sitting like this till tuesday since there closed tomorrow and thats where ill be installing the injectors so as soon as there in we are going to do a couple of more dyno runs...
tuesday for sure will show the dyno sheet and DU cycle of current injectors and new injectors....
http://www.flickr.com/photos/65533272@N08/6907869817/
tuesday for sure will show the dyno sheet and DU cycle of current injectors and new injectors....
http://www.flickr.com/photos/65533272@N08/6907869817/
02-20-2012, 06:51 AM
#171
When I got my car tuned my tuner also mentioned the injectors duty cycle percentage so I traveled 4 hours to check out what he as talking about and he also showed me on the screen my stock injectors were at 99% at a max out of 305 whp so we decided to upgrade to ID725cc injectors and got myself to 315whp. This is all done on my N/A set up.
02-20-2012, 08:40 PM
#178
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2004black350z finally got around youtube here you go...
this was the first dyno pull and will upload one more tomorrow
http://www.youtube.com/watch?v=kA_JPMJytFs
http://www.youtube.com/watch?v=ywF_0ClOZOA
this was the first dyno pull and will upload one more tomorrow
http://www.youtube.com/watch?v=kA_JPMJytFs
http://www.youtube.com/watch?v=ywF_0ClOZOA
Last edited by 512_Z; 02-20-2012 at 08:45 PM.