The stock injectors do go pretty far. Any time I've heard of stock injectors going 11s, it was at an unsafe level, and the truck was nearly leaned out, especially for any Typhoon running that fast. No one should consider doing the 50# stuff unless they are doing some pretty serious bolt ons and are going to push the truck (push the truck means 20+psi, on race gas, shooting for those 11 second time slips).
Most combinations running Garrett or Mitsu turbos won't need 'em. If people are going to run the PTE setup, and really lean on it, the 50# stuff should work very well.
When I first started doing chips, I had so many inquiries about running larger injectors, about half of which were really justified. Many people want to run larger injectors because they think it's just necessary, or it would be the next step of upgrades in their line of thinking, or it offers a bigger margin of safety... there are trucks that need more fuel, but I believe we can identify those combinations that do, based on collected list/board wisdom.
Most of the bolt on trucks really would only need a step up to 40lb/hr or so injectors, problem is that those injectors can be a PITA to tune. You can tune them, but if a combination varies a bit, it can really throw off a calibration for a non linear injector (hard to explain). 50s are easy to tune, and offer more injector headroom than the 40s (support more HP, you'll run your truck at a lower injector duty cycle - which is good). Plus, we are working on calibrations for head/cam combos on built motors; so when your 11.5 Syclone with stock motor bites it, and you build a stronger short block up, we can provide a decent calibration for it with the same 50# injectors.
So, this chip is really for those people who are using any combination of the PTE & ATR turbo setups, with stock motors, and other bolt ons, who are going racing. I am hoping it will work *really* well for the max effort stock motor guys - aka PTE 53, headers, air-air IC, built trans & stall converter....
I've seen better drivability with it, and it should be safer than any 11 second combo that has been done on the stock ECM.
Lotta 'should' and 'will' statements in there, but that's why I need some beta testers.
The webpage should have enough detail to cover most questions.
