MotoCARR

Would you rock a T25 or a 13G and why? Engine is bone stock with about 180k

JoePSI

Im sporting a B18C1 with a OBD1 swap and im rocking a t3/t4oe 57trim.

hah jk...

I would get the t25bb

I Have an STD

T25. its a little bigger and will have more top end, but not to big that it will urt spool time with that little 1.5.

the T25 on a B2 will be a VERY fun little street car.

MotoCARR

good info I hope so! So I take it the 13G is too small? Would boost fall off in higher RPMs? My 02 GTi was fun up until 4k rpm

Would I be better off going with a FMIC or a SMIC with this turbo? I'm going for the super budget turbo build. I can get a DSM SMIC for $30-$40 or a banged up GReddy FMIC for $70.

Greddy



The SMIC is in average shape for being off a '90 few pebble dings here and there,
which one would you go with?

mrbsponge

that FMIC looks horrible. i thought it was my glasses playin tricks on me, i had to look like 3 times to make sure it was really bent

nonvtecD

Use a T3, you could probably even use a 48/60 T3. My D15b7 spooled up the bigger T3 just fine.

Got_soy

that IC isnt worth 70, offfer him 20, GO NO HIGHER. If not rock the SMIC

HiProfile

For a bit more you could get an ebay bar/plate fmic and be happy. Otherwise $30 for a smic would be fine, just cut vent-flaps behind the smic if you place it in front of the pass. wheel well. That and some 310cc's or 450cc's (whatevers cheaper), maybe even plurge for a bov, and you're okay.

MotoCARR

Here's the low down, I got the T25, HF manifold, adapter plate, and DSM 450s for $175. I got the 13G for free, but it has less play than the T25. How much would an ebay IC cost?

Would using the internal wastegate on the T25 be ok for my motor or should I get an external wastegate so I can lower the pressure


Modified by w8lifter21 at 4:43 AM 1/16/2007

MotoCARR

Is an external wastegate the only way to lower boost levels?

JoePSI

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by w8lifter21 &raquo;</TD></TR><TR><TD CLASS="quote">Is an external wastegate the only way to lower boost levels?</TD></TR></TABLE>

Boost controller, [theres also ways of adjusting the line (or actuator) that opens the gate, but i wouldnt recommend doing this].

I would stick with an internal wastegate for low boost, external wastegates are always better... but the cost/benefit of running an external wastegate on a low boost system just isn't very favorable. Boost control on an internal wastegated turbo shouldn't be a big issue.

The main benefit of running an external wastegate is to give waste gases there own flow path. They meet up with with main exhaust further downstream so there isn't a huge amount of turbulence just behind the turbo (which deprives the turbo of power).

MotoCARR

The wastegate on a T25 opens at ~10psi, I could use a boost controller to have it open say at 5-6psi? Would it matter if it was an electronic or manual BC? Any good places I can read up on how to connect it to my turbo? I just searched here and came up with 40+ pages!!

JoePSI

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by w8lifter21 &raquo;</TD></TR><TR><TD CLASS="quote">The wastegate on a T25 opens at ~10psi, I could use a boost controller to have it open say at 5-6psi? Would it matter if it was an electronic or manual BC? Any good places I can read up on how to connect it to my turbo? I just searched here and came up with 40+ pages!!</TD></TR></TABLE>

Yes you can set it to 5-6psi. EBC are more expensive ranging 350$ and up. A MBC would be the cost effective method, you can get a decent one for 60-80$. They are extremely easy to setup, just use the search feature, narrow it down by using words such as 'install' 'mbc' 'ebc' etc. There nice thing about EBC is the accessibility you can change the setting/gain from in the cabin, some of the newer MBC's do this as well via a toggle switch, such as TurboXS's Dual MBC which is what I have; My bro uses the Profec-B and swears by it, but I rather trust an MBC. Good luck.

MotoCARR

Cool, good lookin out. I figured the MBC was the way to go, I have no problem turning a **** under the hood. Anyone run the lines and install the MBC in the cabin? I'm just having a hard time visualizing how the boost controller is going to limit the pressure. When you turn the **** on the MBC, what's happening to allow boost levels to drop? Usually i'm pretty quick to catch on, but this just isn't clicking right now, lol...

JoePSI

You put a boost controller in the path of the wastgates sensor, by modfying how much pressure the boost controller bleeds off you control when the wastegate opens relative to what boost it sees through the line. Thats in a nut shell, its MUCH more complicated but it would be a waste of me to go into it, For a more indepth explanation read this:
http://www.boostcontroller.com...?i=19


Modified by JoePSI at 7:36 AM 1/16/2007

MotoCARR

Great info JoePSI, thanks for the help. It's starting to click now....

JoePSI

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by w8lifter21 &raquo;</TD></TR><TR><TD CLASS="quote">Great info JoePSI, thanks for the help. It's starting to click now....</TD></TR></TABLE>

No problem, let me know if you have any more questions. Ill keep this topic in my subscribed list.

MotoCARR

Using my T25, and keeping boost around 5psi, anyone want to guess about what HP I would be at and would that be a safe level to drivedaily at? 130HPish maybe? Assuming I have a good tune, or as good of a tune as I could have with an SAFC.(I know it's not a chipped ECU, but it was free)

JoePSI

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by w8lifter21 &raquo;</TD></TR><TR><TD CLASS="quote">Using my T25, and keeping boost around 5psi, anyone want to guess about what HP I would be at and would that be a safe level to drivedaily at? 130HPish maybe? Assuming I have a good tune, or as good of a tune as I could have with an SAFC.(I know it's not a chipped ECU, but it was free)</TD></TR></TABLE>

I cannot stress how important it is to get a good tune, AFC are just hacking the stock ECU, Get a basemap from such members on here as kenji or mtber(phearable.net) and then take it to a local tuner to get the A:F atleast and Timing if you like tuned. I recently was running a b18c on .5bar and it blew because i didnt get it tuned right [bent 3 valves, stretched 3 rods, blew 1 piston ring]. Get a basemap, INSTANTLY drive it to a tuner and get it tuned.

I know you are going for a budget build but this is one place where you need to drop the cash.

Check the tuner directory below for a tuner near you:
https://honda-tech.com/zerothread/1347699

Tuning is the most important part to longetivity in any FI build, period

sorry for my rant

I dont know alot about Dseries as I do Bseries; but I wouldnt go over .5 bar on stock internals. I would estimate around 220hp on .5bar; I've never worked on a boosted ninja before tho

MotoCARR

You read my mind, i was going to see if anyone knew of base settings I could use so I could drive it to get it tuned. .5bar is about 7psi right?

JoePSI

Yes, 1.0Bar (14.50 psi) .5 (7.25 psi) - sorry for using bar, have no idea why i didnt just say psi, bleh.

Yeah get a basemap, you just fill out a form on phearable.net or email kenji with your settings. I used phearable.net (user name mtber) i have 780 Peak and Hold injectors which were probably a pita to get a basemap made for, but he got me a good basemap and the car started instantly when i switched the injectors,resistorbox,ecu -- just ship him your ecu and get it chipped or buy a new one from him, I bought one from him becaues i was in a hurry.

Basemap is JUST for driving to the tuner, dont hit boost on a basemap; its possible but dangerous.

JoePSI

Phearble.net uses crome to tune his basemaps, which can be tuned by most tuners, no need for hondata or anything like that; I got hondata for the bells and whistles but for a basic turbo build crome should hold the motors nuts without issue.

dpetro1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JoePSI &raquo;</TD></TR><TR><TD CLASS="quote">Yes you can set it to 5-6psi.</TD></TR></TABLE>

wait. since when can boost controllers lower boost levels below the wastegate pressure?

VTcivicHB

Zing! he can try extending the wastegate arm if he's so inclined

MotoCARR

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dpetro1 &raquo;</TD></TR><TR><TD CLASS="quote">

wait. since when can boost controllers lower boost levels below the wastegate pressure?</TD></TR></TABLE>

That's what's confused me, I didn't think that was possible, haven't read much into it yet though