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Old 05-07-2011, 02:24 AM   #1
Diverdave
Scooby Newbie
 
Member#: 266318
Join Date: Dec 2010
Location: Fairbanks AK
Vehicle:
2006 Baja Turbo
Blue

Default I Need a Baja Tune Map. Help!

I've got an '06 Baja with an A/T. I just put an 18g turbo on it, with a SPT shorty intake and a Random Technology 3" Turbo back exhaust. I also have a wide band air/fuel sensor/gauge installed. Everything else is stock. I have a well recommended open source tuner working on it, but he has no experience working with Bajas. The "STI tune" that he put in it causes problems. It surges, pings and is gutless. It runs fine at cruise RPMs. I'm sure it's a timing problem, but I've got so much money into it now, that I need it running right.
I don't mean to be a prick, but I don't need opinions on why it runs crappy, I need it fixed
Does anyone out there have a proven Baja map?
Thanks guys.
Dave
P.S. there are no aftermarket access ports (that I know of) available for it, so any tuning needs to be done by open source. I've been told that the 18g can handle 350 HP at the wheels, so that's what I am shooting for (or more). I can supply more detailed info if needed.

Edit:
I wrote the original thread about 10 mins after a "detonation event" that occurred at WOT, 5000 RPM, and ~20 psi of boost..... I crapped myself, and I apologize for being a turd, but I was upset. I have about $4500 into it now and all i can say is that exhaust sounds better.
Here are the details: It seems to run good, maybe even correctly up to about 1/4 throttle and 3000 rpm. The problems come at 1/2 to wide open throttle (WOT). I get some predetonation "ping" starting at 3500 rpm and up. The higher the rpm, the worse the ping. The higher the load, the worse the ping. After it pings (after i let out of it and change my boxers), it loses power. One time (after it pinged), at about 3500 rpm, I put it to 3/4 throttle, and the boost went to ~20 psi (which is about my target right now), the wide-band read 11.3 A/F or so, but it didn't accelerate; it just bogged down.
Sounds like ignition timing right? To me, it seems like everything is cool until I floor it, then it pings and the ECU ganks the timing back too far (Am I wrong?). Thing is, my tuner (again, he came highly recommended but has never worked on a Baja. He tuned his 11 sec 2.5 RS/STI though) loaded a proven STI map into it, and now it does this. Could the Baja interpret the STI data differently? The only thing I can think of is the intercooler is about 1/3 smaller than the STIs. But I can't imagine that a few degrees difference in the intake air temp would affect it this much. I live in Fairbanks AK, so I'm about 3000 miles from.... anything. Last I checked, Cobb doesn't make an access port for the Baja, but i'll call and pick their brains maybe. Thanks for any insight.
Dave
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Old 05-08-2011, 10:13 PM   #2
Baja_Gernaut
Scooby Specialist
 
Member#: 229922
Join Date: Nov 2009
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2005 F-Inductd BAJA
rumble black

Default

All I can say about pre-detonation on subaru's, it not good. You shouldn't be driving that car like that. I just installed a vf43 and some other goodies like a UTEC because there is no "map" for the baja. You will probably need a transplant from a STI ECU or another setup. I am waiting for a tune myself but I am not having problems like you are having, I just have a bad case of lag but that's it. Anyway, you did not mention anything about a upgraded fuel pump and that's a no no with a turbo engine if you didn't.

Unfortunately you are in a bad spot getting your car tuned so I would do some serious searching in getting a ECU to match your upgrades. I have read some where that tuning can be done thru email but that's out of league of expertise. Try PM someone from a tune shop and see what they can offer you since in AK, good luck
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Old 05-09-2011, 12:19 AM   #3
ascott13
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Member#: 234966
Join Date: Jan 2010
Location: Worcester, MA or Aiken, SC
Vehicle:
2004 Baja Turbo
black/gunmetal

Default

i would look into getting a new tuner... the Baja isn't an STI, so why would he just throw an STI's tune on it? that seems kinda dumb. even more so since the STI doesn't come in automatic, and the auto uses a different timing map than a manual.

what boost control solenoid are you using? the stock one? aftermarket 3 port? manual?

do you have your own tactrix cable? or were you using your tuner's?
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Old 05-10-2011, 04:46 PM   #4
Subie_Sleeper68
NASIOC Supporter
 
Member#: 166403
Join Date: Dec 2007
Chapter/Region: Tri-State
Location: Center Valley Pa.
Vehicle:
2006 Baja Turbo
Silver 340 AWHP 365 AWTQ

Default

Contact Ray @ TurboTek tuning. I ONLY trust Ryan Gary from Area1320 in Easton Pa, Germaine Riddick from TurboXS in Gaithersburg Md & Ray Orroyo from TurboTek in New England. I listed them by their proximity to my house. RAY will etune for you.
You will ONLY be disappointed if you do nothing, 'cause your Baja is gonna blow up if you don't do something. SOON
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Old 05-10-2011, 04:57 PM   #5
Subie_Sleeper68
NASIOC Supporter
 
Member#: 166403
Join Date: Dec 2007
Chapter/Region: Tri-State
Location: Center Valley Pa.
Vehicle:
2006 Baja Turbo
Silver 340 AWHP 365 AWTQ

Default

I actually just called Ray for you.
He's gonna pop into the thread in a little while or PM you.
GOOD LUCK.
(don't drive it till it's tuned )
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Old 09-08-2012, 02:57 PM   #6
Diverdave
Scooby Newbie
 
Member#: 266318
Join Date: Dec 2010
Location: Fairbanks AK
Vehicle:
2006 Baja Turbo
Blue

Default

So, just in case somebody stumbles upon this thread and has the same problem...... I thought I could baby it along until I could get it fixed. Bad idea. I was cruising through a green light one day when I see a guy out of the corner of my eye running the red on the cross street. I mash it to he floor to get out of his way...... One detonation event cost me two pistons. The worst 2 fer 1 I ever got.
I have an e-tuner working with me now to get the tune safe again before I throw in a shortblock. The moral of the story? Only deal with a reputable tuner! Detonation in a boosted engine is death to that engine!
Sorry I didn't listen to everyone on this thread.

Good luck to you.

Dave
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Old 09-08-2012, 04:13 PM   #7
JLBaja
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Member#: 137951
Join Date: Jan 2007
Chapter/Region: South East
Location: NJ / Florida
Vehicle:
2006 Baja Turbo Blue
Phat Botti Tuned

Default

DD...what did you end up doing to fix and which tuner eventually helped you out?
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