Getting ready to put an S-trim on my Z and had a few questions about tuning with Tunercat. I have the 6lb pulley on it but at my altitude, it will probably run more like 4 or 5lbs. I have 30lb injectors on it and also a 255 in the tank. I'm not anticipating a lack of fuel issue, but who knows. Anyway, I'd like to tune it without the FMU. If I go this route, what changes do I need to make in the program as far as richening it up for daily driving and WOT when the boost starts kicking in. Also as far as timing goes, should I stick with the Crane setup with boost retard, or can I cut the timing down in my tune. If I do that, where do I need to cut it down at? Across the board or just in the WOT table? Also, what kind of A/F ratio should I be shooting for? Around 12:1 or lower? Many more questions, but that will get me started for now. Thanks in advance.

Ken R 95Z

 

I have the same questions. Everyone I have had advise from always say 'take timing out and add fuel'. But HOW MUCH OF EACH? I have the Hi-6TR also, but I think I want to pull timing out of my program also. With my setup, I will be installing 42lb injectors in place of my 30's. All I am doing is adding 6 psi of boost also, so what do I need to do with my Fuel tables, other than changing my inj. constant? Thanks for any and all help for the both of us!

 

I'm more worried about the fuel part of things. I'm thinking I may stick with the Crane timing retard cause it retards it based on boost. It's a no brainer. I want to know how to tune it fuel wise from a part throttle/driveability perspective and from a WOT perspective. I'll have some dyno time, but i'd like to know where to start and a rough estimate for before I get to the dyno.

Ken R.

 

Does nobody have any advise for us??

 

Guess we're just SOL Ponyhntr .

 

Yep, sure looks like it.