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Old 12-30-2013, 10:43 PM   #76
codesbugeye
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Plugs are ngk iridium one step colders. Gapped to whatever they come.
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Old 12-30-2013, 11:09 PM   #77
spoolinsti05
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Quote:
Originally Posted by codesbugeye View Post
Plugs are ngk iridium one step colders. Gapped to whatever they come.
Got a wideband? Bucking is usually a lean condition. Check fuel pressure also.
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Old 12-30-2013, 11:55 PM   #78
codesbugeye
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No wideband... I need one but I would imagine.
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Old 12-30-2013, 11:57 PM   #79
codesbugeye
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Its not bucking. Its just popping like a shotgun in wot only. I can gradually build boost and finally get to 75% throttle untill I get the pop. But when I wanna wot it from low rpm it does it.
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Old 01-03-2014, 10:13 PM   #80
codesbugeye
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Could going from front mount to top mount caude this "lean" pop at higher rpms? I don't know about tuning so I have no clue if its sensitive to front mount or not.
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Old 01-03-2014, 10:38 PM   #81
bswilmington
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Quote:
Originally Posted by codesbugeye View Post
Wouldn't a bad coil pack say misfire? Cause I have no check engine codes. And when I put it on a code reader nothing comes up.. I'm absolutely dumb founded with it. All the coil packs boots are perfect looking. No tears nothing..
People disable misfire codes sometimes on tuned cars.

Typical bad coil will run just fine at idle. It shows itself under load when coil pack can't keep up with needs of engine. Car will lay down under full load and run perfectly fine at 0 to partial load. I've only replaced probably 50 under these conditions and always fixed problem. A bad coil pack most times won't look any different than good coil pack. Visual inspection won't tell you anything most times.
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Old 01-05-2014, 01:57 AM   #82
codesbugeye
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So going from front mount to top mount wouldn't mess with the tune? And what if I get these coil packs and that doesnt fix it.
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Old 01-05-2014, 02:03 AM   #83
missmysubie
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^ I think switching IC might mess with tune but find out for sure before you go that route.

I had similar issues with my STi last year with bucking and backfiring under boost. I used octane boost as a bandaid and it helped the problem for a few weeks. Finally had the car checked out and it turned out I had two issues:

(1)Failing boost control solenoid
(2)the tips of my spark plugs were corroded due to overuse of octane boost.

Had a Grimmspeed 3port installed, brand new NGK IX plugs and retune and all is right again. Needless to say i'm going to avoid using octane boost if I don't need it.
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Old 01-05-2014, 02:08 AM   #84
codesbugeye
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Crazy thing is.... I had the shop revworks In casselberry fl, install the grimmspeed 3 port before the tune. Took the car home after 3 hours of long tuning. Car was running fine the whole way, until last second it seemed like the wastegate was stuck open... upon futher investigation I found that revworks had the boost controllor set up backwards... after swapping it back to how grimmspeed says to install and going top mount I can't wot!
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Old 01-05-2014, 02:23 AM   #85
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you have an accessport?? I also had an 03 bugeye and I had an issue with the bcs.....the ecu seemed to not want to see boost so I had to go to manual boost controller. I was only seeing stock wastegate spring pressure. My tuner had set the wgdc to 0% if I remember correctly. Three bugeyes all had the same issues the same week I did so that was the fix discovered. Bugeye ran like a champ afterwards.
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Old 01-05-2014, 02:26 AM   #86
codesbugeye
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No accessport... opensource tuned my mike adkins. Brand new ebcs 3 port.
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Old 01-05-2014, 02:28 AM   #87
codesbugeye
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I'm ewg setup with a 14lb spring. Pushing 21 lbs. I get the lean sounding pop around 70% throttle and 18lbs.
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Old 01-05-2014, 02:31 AM   #88
missmysubie
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being that I had a similar experience with a bugeye, ask your tuner to see if the ecu is seeing boost. My bugeye's ecu didn't even register that it had a bcs. The issue might have come up on your drive home.... Just a suggestion.
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Old 01-05-2014, 02:33 AM   #89
codesbugeye
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Yeah since I don't have a computer to hook up and pull data I'm set up an appointment with mike to pull a data log and possibly retune tuesday.. guess I just gotta wait.
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Old 01-05-2014, 02:36 AM   #90
missmysubie
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sorry I couldn't help ya more...only my experiences....definitely recommend an accessport....
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Old 01-07-2014, 09:40 PM   #91
codesbugeye
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Took it to Revworks today to get a retune and see what its doing. After 2 hours of tuning they told me the wastegate is not even fully open until 26 lbs. So supposably I need a new wastegate to fix the pop. It amazes me how the wastegate can be causeing a pop especially when my boost gauge is only reading 16-18 when I get the pop. There's a 14 lb spring in it now.
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Old 01-07-2014, 11:17 PM   #92
spoolinsti05
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Quote:
Originally Posted by codesbugeye View Post
Took it to Revworks today to get a retune and see what its doing. After 2 hours of tuning they told me the wastegate is not even fully open until 26 lbs. So supposably I need a new wastegate to fix the pop. It amazes me how the wastegate can be causeing a pop especially when my boost gauge is only reading 16-18 when I get the pop. There's a 14 lb spring in it now.
The ebcs hooked up wrong can do that. If it wasn't opening you will over boost. If it was stuck open you would have no power and a very loud turbo. If it wasn't opening on time you'd see a boost spike and it would fall off.
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Old 01-08-2014, 12:20 AM   #93
codesbugeye
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Yeah mike looked over it before retune. Its hooked up how grimmspeed says.
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Old 01-09-2014, 02:51 PM   #94
codesbugeye
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Man I think revworks is just saying ***** to get money out of me.. I replaced the wastegate and still got the pop but even more intense when it happens... my boost gauge reads 17lbs at 60-70% throttle when I get the pop, pop, pop... just waiting to hear that final boom, that's ends it.
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Old 01-09-2014, 05:59 PM   #95
Bamofo
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Did you change your coil packs? When I built my best friends Bugeye he had a bad coil pack and wouldn't show a problem at low low boost but under real power bucked exactly like you say.
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Old 01-09-2014, 07:01 PM   #96
codesbugeye
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Did it ever show a misfire code? A failing coil pack should throw a code. All the new plugs looks to me like they are burning perfect. Before when I had a problem with them it showed a code.
Man when you say bucking what do you mean? My car doesnt buck or sputter or pause..it boost and goes but pops its way there. It just sounds like I'm hitting ignition cut at 4-5k rpm.
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Old 01-09-2014, 07:49 PM   #97
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I had around the same problems as you in my 04 WRX... Make sure you swap out your MAF sensor with a friends or something. it fixed my problem, and oh yea if its not that then i agreed check the coil packs.
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Old 01-09-2014, 07:59 PM   #98
codesbugeye
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Nickel: when you say around the same what do you mean? What was your setup? I just bought a new maf sensor about 5 months ago denso. My iacv went out the other day and I had to drive with it like that for a week until I got a new one. But I have no cel codes at all..
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Old 01-09-2014, 08:09 PM   #99
codesbugeye
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All though this morning the cel came on for a little throwing a p1312.
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Old 01-09-2014, 08:23 PM   #100
atomicfire
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p1312 is EGT sensor failure. I'm hoping you already deleted and turned off this code.
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