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tdo6 20g

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gstballa 42

10+ Year Contributor
35
0
Jun 10, 2010
paulina, Louisiana
im considering buying a tdo6 20g but i currently have a tdo5h 16g. my HP goals are between 430-450, i have all the necessary fuel upgrades (fpr, wally 255, injectors) and im about to install hks 264/272's with bc springs and retainers with link for the tune, tubular manifold and megan racing o2

ive been doing research nearly all day trying to figure out if upgrading to the 20g with tht setup will be worth it, im fwd so i think the added lag would probly help at launch and the bigger turbo will help with the topend especially with the cams. i guess my question is with my setup will getting the 20g even be worth it?

anyone with imput on this
 
iv seen people make 430hp on a 16g with e85. With that amount of hp with a fwd car your not gonna hook up till like 80mph. Fwd is use less on the road unless you have a super good suspension and a real good lsd with some slicks or some really good street radials.
 
Depending on which 16G you currently have, the 20G will give 4-8 lb/min of additional airflow....how your setup makes use of that airflow is up to you. Guys have installed larger turbos and gone slower before.
 
I'm in the same boat..you can probably do it with e85 but idk about pump...I was looking into the same thing but I think I am just going to save and go bigger so I'm not dissapointed.

Sent from my DROIDX using Tapatalk
 
yea i guess thats more realistic, this is my dd so riding around with my car running with 430 all around probubly is not that practical especially fwd, i just wanna be able to put down a nasty dyno run and have a shitload of power when i go to the strip
 
I won a 20g so i did the move from evo3 16g to 20g. I personally think its not a big enough step for some who has to pay for it. if i were you i'd go with a green or 50 trim. About the same price for more turbo and more useable power being you are fwd.
 
Yeah, just stick with the 16G until you have the money for a turbo that will make a considerable difference like a FP DSM86, FP green or something like that. A 20g will have you wishing you saved your money for something bigger.
 
Depending on which 16G you currently have, the 20G will give 4-8 lb/min of additional airflow...

You will only get 4-8lb/min from a TD06 20g from a TD05 16g?

I thought the td06 wheel had much more potential then the td05. Isnt it the td05 20g that only gets 4 more lbs/min?

The 16g flows 505CFM and the td06 20g flows 650CFM.

Clear that up for me please
 
You will only get 4-8lb/min from a TD06 20g from a TD05 16g?
Only? There is 4 lb/min difference between a 14B and Big 16G...and people upgrade 14B's all the time.
I thought the td06 wheel had much more potential then the td05.
In terms of mass airflow, it does- but depending on your goal using a TD06 turbine may be overkill....especially considering the power that has been made with the FP 68HTA using a TD05H turbine.
The 16g flows 505CFM and the td06 20g flows 650CFM.
CFM x .069= lb per min.

so:

Small 16G = appox 35 lb/min
Big 16G = approx 38 lb/min
20G = approx 45 lb/min

...and some Evo III users have logged as much as 42 lb/min of peak airflow- so as I was saying, depending on which 16G you have you're looking at a 4-8 lb/min gain in peak flow going to a 20G.
Clear that up for me please
I hope I did.
 
In terms of mass airflow, it does- but depending on your goal using a TD06 turbine may be overkill....especially considering the power that has been made with the FP 68HTA using a TD05H turbine.

Okay its all making sense now. The only thing is how is the td06 wheel over kill when it only flows 4-8 more lbs/min? If thats the case why wouldnt people use the td05 20g when it spools faster and is just as capable? Are there any benifits from the td06 wheel?

Just trying to figure it out. Thanks again Justin
 
The only thing is how is the td06 wheel over kill when it only flows 4-8 more lbs/min?
You answered your own question.

The 20G compressor is borderline too much for a TD05H turbine, but the TD06 turbine will add more lag than a 20G-powered street car needs. The 06 and 06H 20G's are generally a better choice for high-boost racing applications.
If thats the case why wouldnt people use the td05 20g when it spools faster and is just as capable?
About 90% of the 20G's that exist for DSM use have a TD05H turbine.
Are there any benifits from the td06 wheel?
Turbine flow via reduced turbine backpressure.
 
Last edited by a moderator:
ive updated my profile, from what im reading on this it appears the tdo6 20g is going to be to laggy for a street machine, i hate to be another person asking what turbo to get but im to that point, the more i read the more questions i get. so what turbo would yall suggest i get for my hp goals without it being over laggy?

How hard are you pushing that 16g? Maybe turning up the boost with satisfy your goals.

17psi around town, 22psi when i wanna go fast:thumb:
 
i havent put my car with a fp td-05 20g on a dyno Yet but i noticed a huge huge difference when switched from a evo3 16g... and the guy i bought my turbo from had dyno numbers around 420 @19psi.. i run mine at 17 daily and 25 strip... have yet to have problems with it and the little amount of lag works out great for daily driving but at full throttle i still hit my boost level at about 3grand in rpms... but i strongly suggest running a extrenal wg... race gas of course would be a best for power, but pump gas is what i run constant and i still kick the crap out of cars around here... just my 2 cents
 
and the guy i bought my turbo from had dyno numbers around 420 @19psi..
Those are awful high dyno numbers for such a low boost number on that turbo- are you sure he wasn't bullshitting you?
 
I think a 50 trim would suit your needs better. A buddy of mine made 466 awd whp but that was on E85. 400whp is easly attainable on pump gas with a 50 trim and a decent tune, especially since you will have less power loss at the wheel.
 
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