I called STS and talked to one of there tech and he said its a great thing having a flex fuel motor because I do not have to buy injectors or a fuel pump???? He also recommended a wideband tune.

I even asked him if I wanted to run max of 7lbs of boost and he said the fuel systems are still good enough for it? Now I would upgrade to 44lbs injectors just because they come with the kit. But about the fuel pump? The radix doesnt require a pump with the supercharger how about the STS??

 

BTW stock flex injectors are 38#er's

 

im running 42's and 8-9# of boost with the stock fuel pump ....everythings fine....i do know that the turbo calls for more fuel thou....

 

Im kind of stuck in between the 2 kits, Radix or STS. The STS seems like it would be alot easier to install, but as far a reliability goes I think the Radix is more complete. I dont mind pigtailing the injectors at all, its just the fuel pump issue and tune. If I were to get the STS I would have to get a DIablo tuner because the area speed shop uses Diablo tuning (But I know after the install I wouldnt be able to bet a custom dyno tune from them because they are a little pricey so the custom tune from STS would have to do for a while.

 

Im kind of stuck in between the 2 kits, Radix or STS. The STS seems like it would be alot easier to install, but as far a reliability goes I think the Radix is more complete. I dont mind pigtailing the injectors at all, its just the fuel pump issue and tune. If I were to get the STS I would have to get a DIablo tuner because the area speed shop uses Diablo tuning (But I know after the install I wouldnt be able to bet a custom dyno tune from them because they are a little pricey so the custom tune from STS would have to do for a while.

 

i have 2002 tahoe flex fuel 5.3 i just blew the bottom end and put a 2004 hummer lq4 6.0 engine in gt3 cam zo6 springs and put my flex fuel 5.3 intake i have 45 pound injectors with a stock pump kenne bell supercharger 8 pounds of boost and just just got the trucked tuned on the dyno 422 horse power 455 torque but truck was running very lean on the top tuner said dont run over 5000 until you put a walbro 255 hot wire kit and a alky control in this truck or you will blow it up again so we turned down the max rpm till mu pump and alky kit come in, chrysler 45 pound injectors fit the flex fuel no pig tails. black and blue colour

 

Radix might be more fun on the street because of the big block feel. I think the turbo is quicker with a loose enough converter though, no complaints here. Gas mileage is GREAT. May do a mag on another vehicle in the future too.

 

how about the trick front mount turbo??? I love mine. id definately go front mount over the sts.

 

This thread is a lil old....

What did ya get?
haha

 

Yeah if I had lived in a colder climate and didn't have to be emmisions legal I really wanted to go with Trick...GREAT kit, just wasn't the best choice in my case. Truck ran decent though when it was done, no regret on my choice.