Turbo set-up to get power:weight of RSX Type S

[Carvin'07]

Hi all,

Thanks for the replies...I am glad to hear that my research was intelligently done. I'm likely not quite as young as quite a few of the members; I have had quite a few different cars over the years. :)

Nexus1155, HMTFTW - nice. Sorry to hear about the love/hate relationship with the Audi...although I was the same with my DSM. I always say, ya gotta pay to play.

anon, what I want is a powerful street car (let's say auto-x) that can be fun without taking it all the way to freaking redline and still not really going very fast. I'm pleased with the 'peppiness' and the fuel economy, but I'm getting tired of it. Like I put in the original post, I want to make about on par with the power:weight of the RSX-S basically because it is a reference point that I am pleased with, so basically ~150 whp...mid 14s to low 15's would be nice; what I want is an all-rounder, not a track/dyno slut. I still need to carry the kids and the dog!

FWIW I think that it's likely that I need a BOV to reduce the backpressure against the turbine. Although I've never run less than 12 psi before...does less pressure mean a BOV is not required?

So, the big questions are:

1. would the GT2052 (1.4 - 2.0L; 140-225 hp; 50 trim) provide 3-4 psi by about 3500...I'm not sure how to figure this out based on the compressor map...help!

2. who makes a reputable turbo ex.mani? I found one at turbo-kits.com, but only as part of a kit...I'm guessing this is a one-off type of deal.

thanks again all,
Trevor

[changchewsoon]

Originally Posted by Carvin'07

Hi all,

Thanks for the replies...I am glad to hear that my research was intelligently done. I'm likely not quite as young as quite a few of the members; I have had quite a few different cars over the years. :)

Nexus1155, HMTFTW - nice. Sorry to hear about the love/hate relationship with the Audi...although I was the same with my DSM. I always say, ya gotta pay to play.

anon, what I want is a powerful street car (let's say auto-x) that can be fun without taking it all the way to freaking redline and still not really going very fast. I'm pleased with the 'peppiness' and the fuel economy, but I'm getting tired of it. Like I put in the original post, I want to make about on par with the power:weight of the RSX-S basically because it is a reference point that I am pleased with, so basically ~150 whp...mid 14s to low 15's would be nice; what I want is an all-rounder, not a track/dyno slut. I still need to carry the kids and the dog!

FWIW I think that it's likely that I need a BOV to reduce the backpressure against the turbine. Although I've never run less than 12 psi before...does less pressure mean a BOV is not required?

So, the big questions are:

1. would the GT2052 (1.4 - 2.0L; 140-225 hp; 50 trim) provide 3-4 psi by about 3500...I'm not sure how to figure this out based on the compressor map...help!

2. who makes a reputable turbo ex.mani? I found one at turbo-kits.com, but only as part of a kit...I'm guessing this is a one-off type of deal.

thanks again all,
Trevor

Hi Trevor,

I could only share my experience with you regarding question 1, which is the Garrett GT20 turbo I'm currently using. This little fella spools up quickly and it starts building boost above 2,000 RPM. The stock internal wastegate is 7 PSI if I'm not mistaken, but I bypass it and paired it up with a Turbosmart wastegate with a 7 PSI spring.

You'll probably reach full boost in less then 3,000 RPM, at least thats what I've experienced so far. I later raised the boost to 8 psi, I still reached max boost in less then 3,000 RPM.

You could take look at the dyno chart here if you're interested:
http://www.yarisworld.com/forums/sho...t=10320&page=3

Hope this helps!