tajabaho1

Hey guys, I'm really worried right now, so please no bs...........

as you can tell, I'm dirt broke from my turbo, have no wideband O2 and obviously no boost controller

today I went for a final datalog run, (run#6)

the boost seems to be all over the place (doesn't look like it's leaking, it's just.....all over the place) 2-7, up and down up and down following the curve of my ignition graph


the ignition does wierd things under boost also, not a consistent graph anymore, varying also

now, when I drive normally, I hear this creeeeeeeeeeeeeeeee sound smell fuel (open cabin) before I thought there might be a leak in my fuel line or fuel pump, it turned out that.......I was......again.......wrong there is no leak, I'm just smelling a shitload of unburnt fuel in my exhaust......

is this the symptom of a blown spark plug?
I recently changed my coils from the ones with 15k on it, to ones with 5k on it, and the problem didn't go away so it can't be that

so I have narrowed it down to 3 things

1. the mazsport base map is running so horribly rich
2. The sparkplugs are gone
3. my motor lost compression

I'd hope it is #2

but I don't know if there is a possibilty that my motor lost compression, it seems unlikely since I didn't crank the boost up, and Scott told me the base map runs on the rich side, but there is still a possibility

can any experts please weigh in on this?

caterpillarking

sorry to hear that , the rotary motor has 3 e-seals, if one of them is broken you will have and internal leak between two sides, i would assume that you blew one of them off, that explains the boost fluctuation, one part is seals so you still get 7psi but thw other two parts are open to each other thats why the boost drops cuz its gonna go to both sides instead of one and thats why you smell the unbearnt fuel

caterpillarking

sorry to hear that , the rotary motor has 3 e-seals, if one of them is broken you will have and internal leak between two sides, i would assume that you blew one of them off, that explains the boost fluctuation, one part is seals so you still get 7psi but thw other two parts are open to each other thats why the boost drops cuz its gonna go to both sides instead of one and thats why you smell the unbearnt fuel

dannobre

iTrader: (3)

Spark plugs don't "blow" in any normal circumstance...so they may be fouled.....but if it starts and idles...probably not too bad.

The likelihood is the base map is very very rich...since you don't have a WBO2 you have no real way to tell what it is.....

What's your idle vac....if its 17-19 your engine is likely OK.

No tune and no WBO2 = asking for a real big problem...and no real way to tell what it is.

Try and borrow a Scan tool...you can read the stock WB on that and get an idea what it is.......but dude...You need a WB...(and a boost controller sooner or later)

AJ's Shinka

Hmmm.

mysql

mazsport base map for the greddy kit was spot on. On the rich side, but it generated 250 whp out of the box. Another 20 whp was gained by additional tuning.

Considering this is his own kit, I would assume the int-x base map for it is going to be decent too.

As mentioned above, I would check the usual suspects for failing. Coils, plugs, etc. But inconsistent boost pressure is something I did not notice when I had failing coils, so I'm doubtful.

04RX8man

yeah are you having trouble with how the car runs? If you have unburnt fuel going through your exhaust it sounds like you MAP is running your car too rich and all that fuel cannot b burned fast enough...Also if your motor seems to b runningok idling ok(except for the fact there is alot of fuel not being burned will feel slugish) your motor is ok....also i would replace ur plugs no matter what if they have not been replaced in awhile...that would b my first toubleshooting fix and see if it makes it any better

mysql

watch 1:00 in on this video:

http://www.youtube.com/watch?v=HFovWJhUBkA

The AFR's are so rich the car is bogging from the excess fuel. The boost gauge doesn't fluctuate.

mysql

actually, if the car can't burn the fuel, it does sound possible for the engine to bog, and thus boost drops.

A video clip would be helpful.

tajabaho1

Jason, my car sounds just like yours in that clip, it's bogging down very insanely

my VAC at idle is -19 mm HG, sometimes -17, but never ever higher -17

it idles FINE, like, just like a normal car

and it runs fine too, just that it bogs down alot around 1.9k rpm and another time @ about 4.9k rpm and my car hits some sort of ******* barrier and the tach flips wildly until I floor it and it goes into full boost, which ofcourse makes the car JUMP in acceleration, and the the unburnt fuel ******* jesus christ smell, then the boost goes insane up down up down blah balahhh

but it runs without boost just fine

it's so depressing you have no idea T.T

tajabaho1

again, omfg jason, my car sounds just like that!!! HOLY ******* CHRIST ITS UNBELIEVEABLE!!! I'M NOT THE FIRST ONE!!!! WOOT YAY LOL IM SO HAPPY ITS NOT A BLOWN MOTOR YAY YAY HAHAH YAY IM SO HAPPY WOOT!!!

all that asside, yes, it is very VERY rich, Tommy told me this ages ago before I even bought the turbo kit off him, he told me that the car will run insanely rich, but I didn't know it was gonna be this rich

and I am sure that the lovely FD coils with 15k miles on them are probably gone anyways so woot.......epic, another 1.4k to sink into me car

swoope

iTrader: (5)

funny. i am not sure which jason video it is.

i do know that jason did have a bad connector on his first install.

it was found much later.

beers

mysql

whut

swoope

iTrader: (5)

pettit install.

hole in one of the connectors between i think it was the intercooler?

this is the same symptom. i was following you.

the first greddy install.

beers

tajabaho1

tmr, i will take most of the front part of the car apart for inspection and put in a new vacuum line hopefully I get it fixed and then next tuesday I will go in for tuning

mysql

oh yea. The coupler under the charge tube burst open. It was the original greddy kit couplers.. so go figure.

tajabaho1

ok, I'm going to look into it this afternoon (waiting for the sun to go down a bit, its hot as hell)

I will take lots of pictures

Highway8

iTrader: (11)

Every rX8 has a wideband O2 Sensor from the factory as long as you have some sort of device to monitor it. Scanguage 2, MSD Dashhawk, AP .....

Good luck, hope you find a bad coupler or something simple.

Brettus

iTrader: (2)

I think that is some kind of clam mating call ....

04RX8man

^^yeah just have a clam heatin up next to the turbo

dannobre

iTrader: (3)

Stock WBO2 doesn't read below 11.1 or so on the CAN bus......that's only marginally useful for a turbo car....

Highway8

iTrader: (11)

True it wont read below 11/1 but even a turbo car should not be below 11/1 once tunned. MM used the stock o2 Sensor when he was tunning turbo cars at the nor cal/bay area dyno day.

Psychofox

Taj, I am sure your car is just running super rich with the base map.
Jeff couldn't even finish up the tune during our socal dyno day becuase it is way to crazy rich. I think he tried to redo it from scratch.

Brettus

iTrader: (2)

I guess the problem is you would have to be really carefull not to go too far with any adjustments ....

Highway8

iTrader: (11)

Super rich will cause a missfire and lack of power but it wont do any damage. I am not sure if it would cause the problem the OP has but it could.