gt4088 a/r question

[Durbin]

Trying to decide on a turbo for the 2.5 class here this next year. What would be the best a/r to run on a gt4088 running a single cp3? I know Pat ran the charger with dual cp3's I believe so I am sure he used a rather large a/r, so figured I would need a smaller one. Any input is appreciated. Thanks
Chris

 

[Bluemax]

I would probably suggest the 1.06 a/r. I think that's what most are running with the 88.
I have the 4094 and run the .95 which works good for the spool but restricts it some at the higher rpms more than I would like. It basically comes down to how much are you going to use the truck when not pulling? The higher the a/r the less usable the truck is if you do much towing, or work the truck much. Hope I helped

 

[Durbin]

I have noticed most are running this a/r but I know ECC_33 has had trouble with high egts and I was wondering if a smaller a/r would be better for a single cp3 although I will be running fairly high rpms in 3rd gear with 315 bfg's so maybe it can put enough load on the engine to make it work. Sorry if I am making wrong assumptions as I am a newb to all these turbo specs.

 

[Mike]

I would probably suggest the 1.06 a/r. I think that's what most are running with the 88.
I have the 4094 and run the .95 which works good for the spool but restricts it some at the higher rpms more than I would like. It basically comes down to how much are you going to use the truck when not pulling? The higher the a/r the less usable the truck is if you do much towing, or work the truck much. Hope I helped

Kevin, you may want to look into an external waste gate for your turbo. This would help with the restriction you are concerned over.

 

[Bluemax]

Kevin, you may want to look into an external waste gate for your turbo. This would help with the restriction you are concerned over.

For the price of a store bought I could buy the housing and put it on and still save money so I'm looking at ways to do a homemade setup. I just hate the idea of soot all over under the hood. I'm open to suggestions and ideas.