If you are talking about the bolt on s300, I wouldn't even bother. I assume you are since the 3575 is a bolt on as well. Personally, I wouldn't get any bolt on if I wanted more than 600whp, but that is just me. I'd have to vote for the 3575 between those two though.
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*New set up is in*
2.4, Polk ported 1g head, comp101400s, JMF Race SMIM, PT67, etc...etc...
56-57lb/min @ 23ps-501/387 on 93 octane (no meth or alky)
awd swap under way
90+lb/min turbo and dsmlink whp title coming soon...
Here's my buddy's full weight 2g with a roll bar (only things removed are a/c and spare) on a 2.3l and fp3575 at 30 psi on street tires using a stock unported 2g manifold and no nos.
That comparison is SUUUCCCHHHH crap. Take a look at the graphs at the same psi overlayed and see how it looks. The s200 is maxed out on the last dyno sheet and they make it seem like that was the most boost that could be run with the t67 (25psi) when in reality I am sure the t67 was blowing much more efficiently than the s200 was at the edge of it's map.
I'm sure an s300 with a big turbine housing would make some power, but not in Bullseye's crappy turbine housing. Its fine for modest power, but certainly less than ideal for somehitng with 800hp worth of flow ( the largest of the s300 compressors).
__________________
*New set up is in*
2.4, Polk ported 1g head, comp101400s, JMF Race SMIM, PT67, etc...etc...
56-57lb/min @ 23ps-501/387 on 93 octane (no meth or alky)
awd swap under way
90+lb/min turbo and dsmlink whp title coming soon...
S366 IMO. The spool up characterisics are pretty impressive on the new Borg Warner lineup side by side w/ BB turbos. We have tested and used the S200 on a few setups w/ awesome results.
I agree with not going with anything on the Bullseye line. I know many who have had issues with their turbos failing or not nearly performing up to what they say (spool and top end wise), what I am trying to say is their quality is horrible. I have seen much more success through not only FP but with their 3575, Jake Montgomery loved his last season, not breaking once with it and this review pretty much says it all right here for the 3575:
That comparison is SUUUCCCHHHH crap. Take a look at the graphs at the same psi overlayed and see how it looks. The s200 is maxed out on the last dyno sheet and they make it seem like that was the most boost that could be run with the t67 (25psi) when in reality I am sure the t67 was blowing much more efficiently than the s200 was at the edge of it's map.
I'm sure an s300 with a big turbine housing would make some power, but not in Bullseye's crappy turbine housing. Its fine for modest power, but certainly less than ideal for somehitng with 800hp worth of flow ( the largest of the s300 compressors).
25 pounds on a T67 is child's play, you will not notice the turbo in it's optimum performance until your reach 32+ pounds of boost, the compressor map shows it's efficiency up at that level.
IMHO, I would not bother with any Bullseye product. Their track record for failures would be enough to scare me away.
You can get an S300 in a T4 flange right from Borg-Warner. The S line up from Borg-Warner is NASTY!! Map Width Enhancement groove (Which Holset uses too) and the Extended Tip Technology.
I saw one that was installed on a 240sx KA motor and the shocking thing was that for idle when you killed the motor the dang thing sat there and spun for almost 2 minutes. You would have swore it was a ball bearing turbo. Crazy stuff.
Just look at who are running them: Brent Rau (S400 DSM), Vinny Tin (Twin S400s 350Z), And one of the GM drives that runs a Cobalt (I can never remember his name.
I've had my bullseye since they've been around and I've beat it to hell, removed it a bunch of times, and I've never had one problem aside from the oil return tube. I also can't really say I've seen too many people with ACTUAL problems with the turbos. Remember, they aren't some random knock offs, they are just name brand turbos with different turbine housings.
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