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Scion xB 2nd-Gen Forced Induction Turbo and supercharger applications...

Boosted...9.8psi 298whp

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Old Aug 27, 2011 | 12:08 AM
  #61  
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Question Turbo Kit

What is a decent Turbo kit that would still keep the car reliable. I am not looking to go out to the track I'm just looking for a more hp. I am NEW at forced induction. What will I need, where is a good place to buy? How much
Old Aug 27, 2011 | 04:13 AM
  #62  
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Since you're new at Turbo, you'll want to buy a complete kit.

Descendant is the most popular choice, and their complete Turbo kit sells for about 4,900. If you buy their cheaper Tuner-friendly kit, it sells for about 2,900, but you'll have to provide the other necessary parts (e.g., Fuel Rail).

The Turbo kit you can order from their Web site where they'll ship it to you. Since you're new to Turbo, it's definitely recommended to have a professional install it.

If you are an automatic transmission, you can safely run your car between 5-7psi max. Some ATs are running 7psi, but just know that there could be potential risk running that or higher. I believe 7psi gets you about 260whp? Around that area.

If you are manual, you can virtually run at any psi.


With an automatic, if you'd like to raise the psi, you'll need to fortify the drivetrain. That'll cost more.
Old Aug 27, 2011 | 08:18 AM
  #63  
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^^ What Pyroman said other than the typo about "fuel rail". I'm sure he meant to say "fuel inj's" or "fuel management" instead. You won't need a new fuel rail unless you're aiming for serious HP. For what you're asking, 440cc can work with the stock ECU and 4-6 psi. More boost/HP/TQ will require 550cc+ inj's and a piggyback engine management unit such as the AEM FIC or others.
Old Oct 10, 2011 | 08:20 PM
  #64  
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just letting ppl know
4000 miles on xb2 now and daily driver, everything going good

still saving for house so anymore upgrades are on the back burner til spring time
Old Oct 14, 2011 | 08:10 PM
  #65  
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why you got to lay low??
Old Oct 17, 2011 | 07:13 AM
  #66  
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aww yea true

saw Descendent had finished kit for 1st gen, was like hmmm for my gf auto xa, we use it as our daily work commuter half the week.

its funny don't mind the barely 100 hp in that but got bored driving my buddies 07 SI the other day haha
Old Oct 17, 2011 | 02:24 PM
  #67  
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Originally Posted by mfeldhs
What is a decent Turbo kit that would still keep the car reliable. I am not looking to go out to the track I'm just looking for a more hp. I am NEW at forced induction. What will I need, where is a good place to buy? How much

The XB engine is capable of doing 200 something hp with the TRD SC and that SC costs a lot doesn't give you enough hp to satisfy you. To install it is a pain in the butt hole, In the other hand the descendant Turbo Kit is the best choice around. Another good point about the descendant is that is reliable ___ hell because it is a bolt on the only part you need to modify is your front bumper and it is not a mechanical part so if you want it to be more reliable it depends on you cuz you chose the amount of PSI, have them install you a boost controller, enjoy your ride oh and f*ck aerodynamics lol.
Old Oct 18, 2011 | 12:17 AM
  #68  
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I believe that the bolt on kit comes with this inter cooler and if you want it to breath and get more power with less effort you should do this n_n

Name:  xB_Intercooler_front.jpg
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Originally Posted by Clean_XB
you dont need to modify the bumper for SMIC. Its full bolt on part
Old Oct 18, 2011 | 10:12 AM
  #69  
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In my opinion that SMIC looks sick, but with the other one it would look more like a sleeper and the TRD CAI might work with the FMIC. As far as I have read here the FMIC was an upgrade for the Turbo Kit and anyway both are good choices.


Originally Posted by Clean_XB
that looks interesting, but rob said today that the SMIC is just as efficient flow wise, as the FMIC.

FMIC is for those who want the look, or dont like the off balanced look of the SMIC.

Flow rates in both locations are identical
Old Oct 18, 2011 | 03:53 PM
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Looking forward to seeing some dyno runs and air temp comparisons of that smic vs an xb2 with a fmic.
Old Oct 18, 2011 | 04:42 PM
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There is no "best" IC for a boosted XB. Only what's "best" for a particular application and owner preference. If I were trying to squeeze every last bit of power from my engine I'd definitely go for the larger FMIC. OTOH, the SMIC is adequate for up to 400whp and I plan to stay well below that. If I simply swapped my SMIC for a FMIC I would probably lose some power due to the extra IC pressure loss. I'd need to raise my wastegate boost pressure to compensate.

It's not necessary to cut the bumper fascia like pictured above to run the SMIC and 300whp/tq. Simply removing the blank vent cover should be enough. You guys are correct in what you're saying though. The FMIC is certainly the most efficient and the SMIC would be more efficient with the front fascia opened up and a large hole cut from the fender liner behind it. I'm just saying that because we're all limiting our power anyway for reasons like auto trans, stock block, etc., it's not necessary or even beneficial to cut the bumper or go with the FMIC. If you're staying below 400 whp just choose the IC setup you like best.
Old Oct 19, 2011 | 02:22 AM
  #72  
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"to each, his own in this case"

That sums it up quite nicely. I also went SMIC to retain a sleeper look but SP2 did a great job of hiding his FMIC with the black IC, couplers and pipes. IMO either IC should work very well for the typical 250-300 whp/tq turbo setup we see.
Old Oct 19, 2011 | 04:19 AM
  #73  
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Im curious to see what happens when that 350whp tc gets an upgraded valvetrain, and can rev out to 7k. If you look at the boost dyno sheet, at 6k, it had JUST spooled...
Old Oct 19, 2011 | 05:11 AM
  #74  
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Originally Posted by Roller_Toaster
Im curious to see what happens when that 350whp tc gets an upgraded valvetrain, and can rev out to 7k. If you look at the boost dyno sheet, at 6k, it had JUST spooled...
Huh? I must have missed something. A 350 whp TC with a turbo that doesn't spool until 6k rpm sounds like epic FAIL to me. ???
Old Oct 19, 2011 | 05:15 AM
  #75  
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Sorry, it hit its max boost (12psi) at 6k. It was a the descendant kit with the second largest turbo available. I would have love to have seen if it actually continued gaining power, or just fell off.

Basically useless for anything other than a straight line drag race.
Old Oct 19, 2011 | 05:42 AM
  #76  
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It sounds like the turbo is too big for anything but the salt flats.
Old Nov 11, 2011 | 05:02 PM
  #77  
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You got 298 now?

Sent from my PC36100 using Tapatalk
Old Nov 11, 2011 | 07:07 PM
  #78  
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yes have had it

would go lil higher psi but need new clutch soon and want lsd at same time but saving for house so xb on back burner
Old Nov 12, 2011 | 07:14 PM
  #79  
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Wow i love the sound of that spool in your video. Have you run a 1/4 mile yet? or measured a 0-60?
Old Nov 14, 2011 | 08:16 AM
  #80  
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naw not yet and thanks

have stock rims with some cheap fuzion zri which really suck with boost so mad tire slip hitting boost

saving for house then rims and tires and need clutch and want lsd too



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