Bullseye V-Trim vs. Bullseye 57 Trim

[sweet97]

Seems that the EVO3 is the best bang for the buck and price was mentiones in the original post, cost between the 57trim and the V-trim, anyways. With the EVO3 going for $459. new it's a hard deal to pass up against turbo's making less power needing special oil feed lines and return lines(of which I believe AGPturbo.com makes the BEST of!@ $100. for both) which add even more to the cost. The difference in cost would be more to spend on supporting mods though the thread starter has a good jump there already! Mark

 

[91-gsx]

Seems that the EVO3 is the best bang for the buck and price was mentiones in the original post, cost between the 57trim and the V-trim, anyways. With the EVO3 going for $459. new it's a hard deal to pass up against turbo's making less power needing special oil feed lines and return lines(of which I believe AGPturbo.com makes the BEST of!@ $100. for both) which add even more to the cost. The difference in cost would be more to spend on supporting mods though the thread starter has a good jump there already! Mark

whats up mark. i see what you are saying, but sbr had the same supporting mods for all the turbos when they did the testing and the evo3 16g still came out on top.

to the starter of this thread who asked:

Im curious which turbo would be a better choice since the T04B V-trim is $580 and the T04B 57-Trim is on sale for $599 since the 57 trim is a bigger turbo but i was curious if bigger is better in this case im looking for 350 whp anything above that is a bonus which turbo will best match my mods my mods with the turbo will be......

2g Ported manifold
Evo O2 housing
3" downpipe/3" magnaflow cat/3" catback
ACT 2600 with Street Disc
Fidanza Flywheel
Extremeintercoolers.com street FMIC with 2 1/2" pipes
Turbo XS Type RFL
3" Intake with K&N 3" intake Filter
RRE Oil Catch Can
MAFT
3" GM maf
SAFC 1
Walbro 190 lph Fuel Pump
550cc Injectors
BM AFPR
Balance Shaft Removed

if you are looking for 350whp, or a little more on pump gas at 20-23 psi then the evo3 16g is for you. you asked for the turbo that matched your mods, well the evo3 matches to a T(550cc injectors ) all i am saying is that you should consider it and the potential i has as well.
later

 

[sweet97]

Tony I agree with you 100% except the EVO3 would fare better with 650cc inj's at 22-23 psi as when I had the EVO3 and 550's I hit 100% IDC's and even the forums at fullthrottle talk of the EVO3 needing 650's to fully utilize it's potential. Great buy!

 

[andymoraitis]

I agree with Mark on this one. At higher boost levels, where the EVO III really starts to shine, 550's wouldn't be enough. 650's or even 750's are a better choice depending on what type of fuel management system is being used.

As I'm interested in potential upgrades, I've debated back and forth between an EVO III and a 50 trim and I keep leaning towards the EVO III for it's price point and simple interchangeability with my Big 16G. Nevertheless, the 50 trim is certainly a better turbo on pump gas and I think it comes down to whether you'll see dedicated track duty or, like most of us, spend the majority of your time on the street.

Just something to think about as either turbo will help you meet your goals.

Andy

 

[90blacktsiawd]

Well this started out as a bullseye turbo thread and moved to the old evo3 vs. 50 trim debate.

I've had 3 of the discussed turbos so maybe i can help alittle. I've gone from an evo3 to a T04b to a PTE scm5031bb.

The evo3 by far spooled the fastest. It would hit 20 psi by 3000 rpms. I was running 650's with it and never had a problem with maxing out my injectors, though i never went above 21 psi or so with it. Definately a very nice street turbo. It made good power compared to the stock 14b with the same spool time. I still sometimes miss the fast spool but that's more than offset by the increase in top end i now have. The one draw-back with this turbo was the boost creep. After i swapped to a GM mas in a blow-through set up i couldnt keep it under 20 psi. I had the turbo ported when i got it but it was ported more for flow than to prevent boost creep.

The T04b was an OK turbo in my book. It would hit 20 psi by about 4000 rpms and pulled pretty good. Better than the evo3, but not by a whole lot. I never had any issues with surging. This turbo didn't offset the slower spool with the better top end very well IMO.

The BB 50 trim which is currently on my car is a beast. It hits 20 psi just before 3800 rpms and pulls like all hell till past redline if i want. It definately pulls alot harder than either the evo3 or the T04b. While i still do miss the lightning fast spool of the evo3 it has been more than made up for with the mid and top end pull of the 50 trim.

All of these turbos were run on 93 oct. with the same 650cc injectors and walboro 190 pump. My set up has remained relatively the same through out all these turbos short of intake changes to accomodate the new larger turbos, a 3" catback and the addition of dsmlink recently. Actually im running out of fuel now with the 50 trim up top. Time for a bigger fuel pump and possibly injectors too. Hope this shed's alittle light on the subject for you.

 

[sickgsx-316]

Well this started out as a bullseye turbo thread and moved to the old evo3 vs. 50 trim debate.

I've had 3 of the discussed turbos so maybe i can help alittle. I've gone from an evo3 to a T04b to a PTE scm5031bb.

The evo3 by far spooled the fastest. It would hit 20 psi by 3000 rpms. I was running 650's with it and never had a problem with maxing out my injectors, though i never went above 21 psi or so with it. Definately a very nice street turbo. It made good power compared to the stock 14b with the same spool time. I still sometimes miss the fast spool but that's more than offset by the increase in top end i now have. The one draw-back with this turbo was the boost creep. After i swapped to a GM mas in a blow-through set up i couldnt keep it under 20 psi. I had the turbo ported when i got it but it was ported more for flow than to prevent boost creep.

The T04b was an OK turbo in my book. It would hit 20 psi by about 4000 rpms and pulled pretty good. Better than the evo3, but not by a whole lot. I never had any issues with surging. This turbo didn't offset the slower spool with the better top end very well IMO.

The BB 50 trim which is currently on my car is a beast. It hits 20 psi just before 3800 rpms and pulls like all hell till past redline if i want. It definately pulls alot harder than either the evo3 or the T04b. While i still do miss the lightning fast spool of the evo3 it has been more than made up for with the mid and top end pull of the 50 trim.

All of these turbos were run on 93 oct. with the same 650cc injectors and walboro 190 pump. My set up has remained relatively the same through out all these turbos short of intake changes to accomodate the new larger turbos, a 3" catback and the addition of dsmlink recently. Actually im running out of fuel now with the 50 trim up top. Time for a bigger fuel pump and possibly injectors too. Hope this shed's alittle light on the subject for you.

just out of curiosity, are you running internal or external on that 50trim? If internal is it the regular one that comes on it or the "larger" one that most shops charge 125+ for and have you had any issues with it?

I know on a lot of those SBR tests the one of the major limiting factors was the internal wastegates on the larger turbos.

 

[90blacktsiawd]

I'm running an external with the 50 trim. I should have actually mentioned that before as that changed since the evo3. The evo was an internal as it never gave me any problems with holding boost. The T04B gave me trouble with holding more than 16 psi till redline with the 38mm internal wastegate. Actually it would start to drop off around 5000 rpms. So i switched to a tial 38mm off the manifold at that point and i've been using ever since.

 

[Turbocharged]

I can run as low as 14psi on my internally gated 50 trim (38mm flapper). I have a tubular O2 housing which helps a lot. I think external setups are overkill for anything smaller than a 60 trim.

 

[90blacktsiawd]

Definately not overkill for anything under a 60 trim. I already explained that my 38mm internal couldn't keep itself closed over 16 psi at the higher rpms and this was on 3 different adjustable actuators. I hate to give credit here but even Slowboy proved this same issue with a handful of the Bullseye turbos. In some cases you just can't get the flapper to stay shut. So what do you do when this happens? Either deal with the piss poor top end or go to an external.