Performance Down With More Power Part 2

[wrxkilla]

Hi All,

With reference to my other thread that got shutdown thanks to all the trash talk and tuner bashing. Please keep this thread alive.

As these problems happen to other people in the future, its easier for them to search through and find the same problems, the resolutions we come up with and everyones advice....

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We have another step to add to the thread...

Car went back on a dyno to help problem solve.

No changes to the car since this tune:

All of a sudden as I experienced at the drags its down on power etc...

This is current dyno print out...

as you can see there is a problem with the boost curve.

Most seem to agree that this is most likely an issue with turbo or manifold bolts missing or loose. One or two have recomended new actuator.

Will update soon as we will be checking the bolts soon...

Incase anyone wishes to read back with the previous findings etc etc etc...from when this problem started.

http://www.fordxr6turbo.com/forum/index.php?showtopic=30497

michael

[GOLDIE]

If you take the rear exhaust heat shield of you can see all the turbo and most exhaust bolts to see if any are loose should take no more than 1/2 an hour tops to do this.

Ian

[wrxkilla]

thanks Ian,

will be doing tonight.

Will let you fellas know how I go tomorow.

cheers

Michael

[Adam]

So the problem is in the low to mid range, right?

As both sheets have that quick jump right at the end.

I didn't think an actuator or a leak would give those results.

If it does turn out to be the actuator can you get a detailed reason why boost won't hold low but will higher up?

I thought it would hold low but not high. I'd just like to know how it all works.

[jetute]

looks like its not not building boost and not holding it..... even more reason to check manifolds bolts etc... its leaking somewhere... just MO though.

and your boost is not holding top end either.... its down all the way from the original run

Edited 05/12/06 07:57 AM by jetute

[BAturb]

if it was leaking that bad shouldnt you be able to hear it leaking, just interested for future reference for anyone who may suffer the same symptoms

[jetute]

turb.. not necessarily... I thought I could hear it in raphs but everyone else said they could not...

killa... that's hardware related for sure... can you get to the heat shield yourself?? or you getting someone else to do it?

[RAP1D]

What are the brakets like on the accualtors? Ive had them slowly bend on previous cars resulting in slack boost.

What about cleaning the boost solenoid? Checked all your vac lines, maybe ones bent or cracked/leaking?

CAn they reflash the same tune back into your capa box?

Could disconect the accuator at the w'gate and run it up on their dyno to see if that boost issue is software related... with no ebc influencing the turbo it should spool straight up ( just a quick jab, not a 30psi run lol )

[NATHOON]

Could it be a melted cat. If power is down occasionally it could be the buiscuit blocking half the exhaust and killing power. This happened to my evo 3

Just a thought

[jetute]

Could it be a melted cat.  If power is down occasionally it could be the buiscuit blocking half the exhaust and killing power.  This happened to my evo 3

Just a thought

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interesting.... and the cat could well cause it...

how much would one be up for to get the cat tested??????