Is the IX 20g worth $800 more than the VIII 20g TME, because I am at a point where I need to decide? I was set on the IX 20g, but I'm thinking it might be better to save $800. What are the HP differences going to be on a motor with all the usual bolt ons? I couldn't find any comparisons of the two turbos. Thanks

 

Someone correct me if I am wrong but doesn't the VIII 20g have surging problems? I too would like to get some info on this topic.

 

+1

 

+2

 

everything i have seen says the 8 20g surges, on another thread a guy got a 9 20g but wanted one with the tme internals and david posted that he thinks that the tme internals will only make the surge worse.

 

Thats because there are no comparisons between the two besides the work David has done. A few people have taken delivery on the 20g-9 but the fitment kit has not come in yet. I imagine once these kits start shipping out we can start to see some numbers.

Like Ive said in at least 3 other "should I get the 20g-9" threads, if your looking to make a hp/$ comparrison between the 20g-9 and anything else, your going to have to wait until people start installing them on their cars to see the power curve that they generate.

And if you are able to re-use your existing 10.5 hotside (assuming you have one) then I beleive you can save $300 bucks on the cost of the new 20g-9. Given that, the cost difference is much less than $800.

 

Its about adjustment.. You need to pay close attention to the adjustment of your BOV and Wastegate actuator.. If you drive the car primarily on pump gas, or want to do road racing, you need to run slightly lighter wastegate pressure and BOV spring pressures, that will relieve a majority of the surging. All turbos surge when you have a very high spring rate in the BOV's and Wastegate actuators.

 

hey jack i get at what u r saying cause i had a tial bov with the highest spring and over 20 pounds of boost it would surge bad and then i put the stocker back on adn it got rid of the problem, but i was wondering it this is such common knowledge how come david hasnt applied it to his testing? welll i guess that isnt something that you have any direct thought on, have you seen the 20g8 produce no surge or is something u r giving and educated guess on? I am not trying to start anything just trying to figure out my mod path, thanks malibu. I have seen other post of yours and in my own testing and trying out parts i have come to agree with you on your findings.

 

hey jack would the forge heavy acuator increase surge more then it would hold booost?

 

So, I can't just bolt the 20g9 on to my car? What does the install kit consist of? I assumed they were direct bolt ons. The reason I am asking all of this is because I can get a 20g 8 TME for $950 brand new, and Buschur quoted me $1750 for a 20g 9. I have a stock 2003 turbo, so I don't have a core. I am just trying to figure out if the extra $800 for the 20g 9 is justified. Thanks for the help.

 

the $1750 includes the install kit...

 

No, you can't just bolt on the 20G-IX, because it requires different oil/water lines and a different LICP. The higher price includes this install kit, and it of course costs more, because it has the larger IX compressor housing, whereas the 20g-8 has the previous, smaller compressor housing.

 

Ok, thanks, I didn't know that. So the 20g IX isn't much more expensive than the 8 20g because it includes all those extra parts. I am going to buy the ix 20G instead, even though it is more expensive.

 

It depends on which spring you put in.. Using the 14-18psi spring, it was fine, with the 18-21psi spring (red spring I think) it surged badly.. It really depends alot on how much boost your running since your making compromises to run the higher boost. Since I primarily run pump gas with alky, I don't generally run higher than 25psi.

 

hey the 20G-8 is a true bolt on turbo right? I have seen some people say that you need a slim fan for the 20G to not rub. any help would be great