So... needless to say I am very disappointed with my switch from 175/stock to 175/75. Although the truck feels a little faster (like 20hp) I would say that the truck is 10 times smokier. Egts are much higher. I can hit 1200 egts on a light 1/4 throttle 0-75 mph. Although at WOT 0-100 I only hit about 1500 egts. Average cruise with 175/stock was 650-750 now with 175/75 850-950 It is flat out embarrassing to daily drive. I will dyno these injectors before switching but I will be switching soon and I wanted to get some feedback and see if anyone else has tried larger injectors with little nozzles.
My 175/stock seem to keep egts way down. Better fuel mileage. WAY LESS SMOKE. Similar power (soon to be shown on a dyno). All around much better for my use which is putting 40,000 miles a year on my truck in a metro area full of freeways and stop n go traffic. I do not want to go back down in size. I would like more power with better driveability.
Oh and before anyone thinks I have not done my research or due diligence here is what I have tried.
Multiple tune revisions from multiple tuners
Switching back to a smaller turbo (mtw stage 1)
checked for all possible leaks
checked all sensors and parameters
the problem started only after installing nozzles on my 175/stock injectors
People used to think that 175/stock made no performance gains over stock injectors which we have learned is not true. There is a huge gain in performance. People also used to think that the only way to get performance was to put big nozzles on the injectors. Well I am thinking the nozzle size (at least for my purposes) does not need to be so big.
Since I loved my 175/stock, even better than my stock injectors. 175 is about 23% bigger than stock. The right ratio should provide great atomization etc etc... 175s should get 23% nozzles... right???
I would like to go even one step further and get the same ratio as my 175/stock. The closest I get get with that would be by adding 30% to the size of my injectors... 175 + 30% = (175x1.3)= 225/30
Has anyone tried super big injectors with tiny nozzles?
Anyone wanna poke some holes in my logic
I don't claim to know everything about injectors
but I like to think outside of the box
So should I go with 225/30 or 225/50