what size turbo

[mellowyellow]

I have the chance to purchase a 20g turbo for my sy, my question is will there be any advantages to having a larger turbo on my stock engine? i do have the common bolt-ons afpr,k&n,magnaflow exhaust, intercooler pump, fan, heater hose mod 10-1 chip.I was told by the previous owner that my stock turbo was rebuilt with a 1 size larger exhaust turbine and housing? but am thinking about the 20g. any help greatly appreciated thanks.

 

[Flyin Ryan]

Re: what size turbo

20g I believe flows 100cfm more then the stocker and if anything would add a little more power on the top end. Can't say if you'd feel the difference or not though

 

[dgoodhue]

Re: what size turbo

You will need to know if its 10cm2 exhaust housing, 12cm2 or 14cm2. A 14cm2 will need a bigger stall converter. A 12cm2 is borderline (atleast from what I have read).

 

[H-TOWN-TYPHOON]

Re: what size turbo

A 14cm2 will need a bigger stall converter.

Very true. I have a 20g 14cm2 on my truck with a stock stall. Leaving the line @ 0-.5lbs sucks the monkey butts. I don't really get full spool until after the 1-2 shift.

IMO, if it is one of the smaller sized 20g turbos, pass on it unless your current turbo is in the process of taking a dump. Spend the money on some tuning equipment and get your truck to 90% or better to get ready for when you have the dough saved for a bigger upgrade. :2cents:

 

[James Thomas]

Re: what size turbo

Call Waller or Mike Lee, they will give you the straight info but if you really don't want to go with a turbo that requires a stall converter. A 20g with a 12cm ex. housing and proper tuning will have very little if any lag and a noticeably better top end when tuned with your existing mods. It's all in the tune!

_________________
James

 

[mellowyellow]

Re: what size turbo

thanks alot for the help

 

[gjp]

Re: what size turbo

I went with the stage one from rpm. It spools great with a stock converter. Wastgate is 100% better then stock. I do agree that a larger turbo should be later on the mod list.