Zoom zoom BoOm x2.

[Focus]

Datalog would answer those questions.

 

[Mr. Win]

brian did you replace the cams or anything??

 

[TurfBurn]

Which plugs were you running? I hope not the stock Mazdaspeed plugs... those things are HORRIBLE for these cars.

 

[Mr. Win]

yea but even if that was the case signs of det would be on all pistions correct?

Which plugs were you running? I hope not the stock Mazdaspeed plugs... those things are HORRIBLE for these cars.

 

[atticus1398]

Why though? Intake temperatures too high? Fuel mapping not right? Not enough timing retarded? Bad fuel? Idiot driver (given)?

You saw the map I loaded right? The thing would go down to 11.2 a/f and slowly creep back up to like 12:1 (through the stock o2 sensor). I kept adding fuel until it chugged then backed some off.

I need to know why this happened or I'm gonna drive myself crazy. If it was my fault, it doesn't bother me as I have done/and will do worse things. Not knowing kills me.

the theory of the extra injectors continuing to spray after the stock injectors hit rev limit would create a lean condition, correct?

 

[igdrasil]

Yeah that one definitely shows signs of it.. but like I said I'm surprised how the other DON'T seem to show any signs of it... that's what weirds me out.. why they are cracked as well and show no pitting or heat marks.

Others are showing detonation on the very begining of it. That piston has sustained more detonation than the others. That could be caused by difference in injection or boost per cylinder. Individual cylinder management will cure that....electromotive TecIII

 

[Brian MP5T]

the theory of the extra injectors continuing to spray after the stock injectors hit rev limit would create a lean condition, correct?

Yes, the engine would normally cut fuel and you would stop going faster, here, when the fuel cuts, the EI Still runs the car but way lean.

 

[TurfBurn]

yea but even if that was the case signs of det would be on all pistions correct?

Yes, some signs should have shown... but it may be a weird case where the CP pistons are strong enough to not show too much of an issue as far as detonation on top, but still rupture at those reliefs because of the stress riser that causes.

 

[TurfBurn]

Others are showing detonation on the very begining of it. That piston has sustained more detonation than the others. That could be caused by difference in injection or boost per cylinder. Individual cylinder management will cure that....electromotive TecIII

]

I'm used to seeing cylinder 4 having the most issues with stuff like that... almost everyone that has popped has popped at cylinder 4... so cylinder 1 being weird is unusual....

I also had my injectors checked and balanced as much as possible to get them within about 3% of eachother to try and ensure more even mixtures etc... Also, because I have reports on each one I can then monitor cylinders and move the injectors around to balance out any lean/rich conditions.

 

[TurfBurn]

Yes, the engine would normally cut fuel and you would stop going faster, here, when the fuel cuts, the EI Still runs the car but way lean.

Right, but as nick indicated, if you tune the EI maps to do so, you can prevent that from happening.

 

[TurfBurn]

Can the video of the dyno be posted??

 

[13984]

Well, I just joined the x2 club. Yesterday on my way home from going out to eat I blew my 2nd motor. So now I get to listen to everybody (stooges) tell me I should get rid of this turbo kit again. But I won't (laugh)

 

[Protege52003]

Can the video of the dyno be posted??

video here:

http://new.uksiland.com/imagez/

BoomBoom.mpg

-R

 

[4001]

Thats the video of blkzoom on the dyno ?

 

[igdrasil]

Well, I just joined the x2 club. Yesterday on my way home from going out to eat I blew my 2nd motor. So now I get to listen to everybody (stooges) tell me I should get rid of this turbo kit again. But I won't (laugh)

welcome hehehe now its time to go forged.

 

[evilmonkeyMSP]

that was painful to watch/hear ........

video here:

http://new.uksiland.com/imagez/

BoomBoom.mpg

-R

 

[Focus]

That video shows the dyno operator catching the problem pretty quick.

 

[evilmonkeyMSP]

after pegging the RPMS for a few secs....i guess thats quickly

That video shows the dyno operator catching the problem pretty quick.

 

[TurfBurn]

Yeah... and nothing slipped.. that speedo takes off right with the rpm's... fricken pulls hard as hell right up to that end there... I can't tell what the tack is getting to... the only thing I hear is the pitch of the motor change like it hits a rev limiter. I don't even hear anything significant as far as detonation or the like...

 

[Focus]

Look at the tach. Barely 2 seconds.

after pegging the RPMS for a few secs....i guess thats quickly