Cobbtuned Posted October 11, 2017 Share Posted October 11, 2017 Looking to get a new turbo. Looking at the blouch 20g but dont want to over do it. I know i should talk to a tuner first but until then wanted some input from the LGT community. Thanks in advance for suggestions and input. Mods that I have currently Vf39 turbo Perrin Up pipe cobb downpipe Aem Cold air intake Fmic 255 walboro fp Cobb ap 750cc injectors 3" exhaust Link to comment Share on other sites More sharing options...
Max Capacity Posted October 11, 2017 Share Posted October 11, 2017 Are those injectors kind of small for a bigger turbo ? 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
robburns201 Posted October 11, 2017 Share Posted October 11, 2017 I read a couple threads in here that says you can run stock injectors with 20g....idc might be high but OK...so 750 my tuner says is good for vf54...how much more a 20g is IDK Sent from my 0PJA2 using Tapatalk Link to comment Share on other sites More sharing options...
rougeben83 Posted October 11, 2017 Share Posted October 11, 2017 Usually, you want a little extra headroom for fueling in your injectors... you don't want your injectors firing near 90% of their duty cycle, for example. I think you can get away with 750cc on a 20g, but you are leaving some HP on the table if you're trying to get the most out of your tune. Link to comment Share on other sites More sharing options...
Max Capacity Posted October 11, 2017 Share Posted October 11, 2017 Remember my vf52 has been on stock fueling at 21psi since Aug 2011, 102,000 ago. You need to justify the cost/HP to me it wasn't worth it to go with bigger injectors. I can get into trouble just fine with the AWHP its making. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
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