VEX_JB Posted March 20, 2014 Share Posted March 20, 2014 So I'm running a DW65c intank and DW740cc injectors on my 05 OBXT with a Blouch 380xt. I'm having issues at 5000+rpm with fuel delivery. While tuning, adding more fuel up top makes no change in the AFR's. Just wondering if anyone else has seen or solved this issue. I'm suspecting it's the weird FPR these cars have... Will post the afr log shortly Link to comment Share on other sites More sharing options...
VEX_JB Posted March 20, 2014 Author Share Posted March 20, 2014 http://farm3.staticflickr.com/2847/13289998875_865226fcf2_b.jpg The green is the previous stage 2 tune on stock injectors. The blue is my new setup. Adding fuel above 5200rpm does nothing... Link to comment Share on other sites More sharing options...
sjxbrd Posted March 21, 2014 Share Posted March 21, 2014 Jimmy, I'm SlowLGT from WSC. I also have DW740 side feed injectors and DW65C in tank pump on my 05 LGT. When car was on the dyno, Sunny seemed to have a similar problem. My car has a lean spot around 5200~5500rpm, looks just like that bump you have in your AFR. Sean Link to comment Share on other sites More sharing options...
VEX_JB Posted March 21, 2014 Author Share Posted March 21, 2014 Figured it out. It's this stupid recirc'd FPR. Switching it out Link to comment Share on other sites More sharing options...
monsterface Posted August 28, 2014 Share Posted August 28, 2014 Has anyone else experienced this issue with their tuned LGT? If so, what did you end up doing to solve the issue? Link to comment Share on other sites More sharing options...
Brian3676 Posted August 28, 2014 Share Posted August 28, 2014 I have same pump and injectors, no issues for me with stock fuel pressure regulator. I also have the fuel pump hard wired for better voltage and a Sti fuel pump controller tho. My fuel pressure stays pretty steady even up past 5k RPMs and 20 lbs of boost. I don't tune tho, Cryo tuned me so not sure what he adjusts. Link to comment Share on other sites More sharing options...
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