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Author Topic: Bump Stop Problems.....  (Read 839 times)
JonesingForSpeed

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« on: August 29, 2009, 01:23:35 pm »

Guys.... sigh... nothing but problems with my STI.  Its gotten to the point where my 69 Chevy (old american car) is causing me less problems than my new japanese car.... that is unheard of...

I installed my suspension yesterday and ran into some crap (as usual)
The Epic Engineering Springs that I got came with 2 bumpstops.
During the install, those bumpstops didnt seem to fit.  My distributor said it was for the rear, but their website said its for the front and other websites say there are supposed to be 4 stops...  I dont know anymore whats what..  I didnt even see any factory bumpstops on any of the struts so i dont know if there are any for the 07 STI or if the previous owner is a douche bag...  Im going for Douche bag...  If you look at this pic, this is my rear strut with the bumstop provided.
You can see how the hole is too small on the stop to be able to slide into the strut.  The strut is as fat as the entire stop..
Same story for the front.  Not unless they sent me the wrong stops, Am I doing something wrong?

Meanwhile, Im misfiring on my stage 2 at low altitude, I was advised to change my plugs to NGK 1 step colder, and not to gap them cus they are pregapped...  didnt help.  I called Cobb and they said it looks like a programing issue, so I called HB Speed and scheduled and paid for a protune next Wed cus Cobb kept lagging.  Then yesterday finally after a week cobb calls and said they reviewed the data log and it looks like its not a programing issue but a mechanical issue, probably ignition or fuel...great... Oh and HB Speed said that I shoulda gaped the plugs to .025 cus the 1 step colder has a huge gap .032
So basically everything I do, i have to redo twice cus people cant provide correct information.

Please tell me you guys have had similar problems and have 1st hand experience and can help me with any of my problems?
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ansonowicz
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« Reply #1 on: August 31, 2009, 12:04:40 am »

Wrong bumpstops for sure.  The STI struts are 40mm i believe. Those look like regular WRX bumpstops.  As for the mechanical issue,  the 2.5litre plugs are a pain to find solid info for.  But yes, they come pre-gapped at .032 and I usually gap them at .026 to the best of my capability.  Most of the rest of the world has 2.0L blocks while north america gets 2.5L blocks.  Things get VERY confusing.


http://www.clubwrx.net/forums/maintenance-service-repair/46855-how-change-your-sparkplugs-4.html#post2126816
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hoppergrande
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« Reply #2 on: September 03, 2009, 07:10:03 pm »

dont get too discouraged. we all have problems. every car will have them.
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