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09-14-2012, 08:16 PM | #1 |
Scooby Specialist
Member#: 329049
Join Date: Aug 2012
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MWSOC
Location: Fort Knox, Ky
Vehicle:04 sti PSM (unfortunately) |
TGV delete aftermath??
I deleted my tgv's today, bought them off of another member and installed them. Now it runs kinda choppy like a misfire but the codes haven't popped up for it yet.
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09-14-2012, 08:20 PM | #2 |
Scooby Guru
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MAIC
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Ok............cool story....
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09-14-2012, 09:12 PM | #3 |
Scooby Guru
Member#: 51961
Join Date: Jan 2004
Chapter/Region:
RMIC
Location: Broomfield, CO
Vehicle:2005 STi 2012 WRX |
Probably have a vacuum leak
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09-14-2012, 09:31 PM | #4 |
Scooby Newbie
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Join Date: Mar 2009
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International
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Vehicle:2006 Forester XT DGM |
New gaskets all round, or just re-used the old?
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09-14-2012, 09:31 PM | #5 |
Scooby Newbie
Member#: 310184
Join Date: Feb 2012
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Location: NJ
Vehicle:2012 WRX Blue Pearl |
Need a tune
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09-14-2012, 09:35 PM | #6 |
Scooby Guru
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TXIC
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Vehicle:02 wrxbastardchild aw, MPS 2.34 breaking in |
probaly all the above, go to revolutions and have Adam hook you up.
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09-14-2012, 09:48 PM | #7 |
Scooby Specialist
Member#: 329049
Join Date: Aug 2012
Chapter/Region:
MWSOC
Location: Fort Knox, Ky
Vehicle:04 sti PSM (unfortunately) |
Ya I've used new gaskets. I'm thinking its needing a tune?
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09-14-2012, 09:49 PM | #8 |
Scooby Specialist
Member#: 329049
Join Date: Aug 2012
Chapter/Region:
MWSOC
Location: Fort Knox, Ky
Vehicle:04 sti PSM (unfortunately) |
But Idk it shouldn't be running rough should it?
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09-14-2012, 10:23 PM | #9 |
Big Ron
Super Moderator Member#: 18062
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You have a vacuum leak. You missed one of the 900 vacuum fitting connections...it happens. Check every fitting. Same thing happened to me as I missed the one that goes under the throttle body.
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09-14-2012, 11:07 PM | #10 |
Scooby Specialist
Member#: 262117
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Tri-State
Vehicle:2001 Forester STI MKtuned |
Tune. period.
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09-15-2012, 03:34 AM | #11 |
Scooby Specialist
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MWSOC
Vehicle:2005 STI E85 Power |
Vacuum leak. Get a tune as well.
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09-15-2012, 09:44 AM | #12 |
Scooby Specialist
Member#: 329049
Join Date: Aug 2012
Chapter/Region:
MWSOC
Location: Fort Knox, Ky
Vehicle:04 sti PSM (unfortunately) |
Yes plan to get e85 tune as soon as I get injectors.
But the vacuum leak could be a possability as I did have to pull up on the maifold as i put the tgv in |
09-15-2012, 10:48 AM | #13 |
Scooby Guru
Member#: 51961
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RMIC
Location: Broomfield, CO
Vehicle:2005 STi 2012 WRX |
You don't need a tune for TGV deletes (other than to turn off the codes, and to make sure the extra flow hasn't push you into untuned regions of your map at WOT). Do people forget we run a MAF-based fueling system?
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09-15-2012, 11:19 AM | #14 |
Medium Frank
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Join Date: Feb 2007
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MAIC
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Vehicle:2020 Subaru Outback |
People read too far into the "everything you do needs a tune" part of NASIOC.
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09-15-2012, 12:41 PM | #15 |
Scooby Specialist
Member#: 329049
Join Date: Aug 2012
Chapter/Region:
MWSOC
Location: Fort Knox, Ky
Vehicle:04 sti PSM (unfortunately) |
I figured out the problem that one of the injectors wires came out of the plug.
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09-15-2012, 09:48 PM | #16 |
Scooby Specialist
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Did that too first time I did air pump or something. Never touched them but somehow plug on 4 got loose. Drove 2 hours to the tuner and just thought the roughness was normal with the check engine etc. sounded like a 3 cylinder but never dawned on me till tuner checked the spark timing and saw 4 was off. Wasted over half a tank of gas too in that short drive. Live and learn.
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09-15-2012, 11:46 PM | #17 |
Scooby Newbie
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Join Date: Aug 2003
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Thank you for updating what the solution was. Vacuum leak was a great diagnosis though. Get a tune was on the verge of retardation. Only thing you should notice from this swap is a slightly rougher idle at cold startup.
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09-16-2012, 04:36 PM | #18 |
Scooby Guru
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Vehicle:05 Stage Free LGT ATP 3076, 6MT, AVO FMIC |
Glad to hear you got it figured out.
I'd be surprised if you noticed a rougher idle, even in cold starts. It's a reasonable theory based on what the TGVs (better atomization) and when (my LGT only has them active at startup (some later models use them more)) but I have yet to hear of a first-hand report from someone who did cold starts with them, did a swap, and did cold starts without them. One of the guys at LegacyGT.com, who lives in Canada and uses a block heater in the winter, said his car still started and idled just fine with the TGVs removed, even in the winter. There was a time (and maybe it's still true) that TGVs were a USDM-only thing (or at least, they weren't used in JDM cars). So I'm pretty sure they're strictly for post-startup emissions. And you don't need a tune for them. And people create vacuum leaks while doing the delete all the time, so that was my guess too. |
09-16-2012, 04:38 PM | #19 |
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Join Date: Feb 2007
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09-16-2012, 04:43 PM | #20 |
Scooby Guru
Member#: 51961
Join Date: Jan 2004
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RMIC
Location: Broomfield, CO
Vehicle:2005 STi 2012 WRX |
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09-16-2012, 06:25 PM | #21 | ||
Scooby Specialist
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Vehicle:2006 WRX TR WRB |
Quote:
Quote:
(im sd ) |
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02-11-2013, 12:26 PM | #22 |
Scooby Newbie
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Tri-State
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Im getting ready to do the tgv delete i was going to do all the porting myself. Is there anything i need to know i watched a couple videos on YouTube looks pretty easy. But that's YouTube.
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02-11-2013, 03:12 PM | #23 |
Scooby Specialist
Member#: 329049
Join Date: Aug 2012
Chapter/Region:
MWSOC
Location: Fort Knox, Ky
Vehicle:04 sti PSM (unfortunately) |
You dont need to take the whole manifold out. Just unbolt from tgv and pull old ones put and rebolt the fuel rails to it
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