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Bump.. Any one have anymore information on this?

I found illumaestheti has some. Has anyone tried them?

Did steering wheel emblem overlays and shift boot recently super happy with it!

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My Jdm Spec B....

 

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Is this not for sale right now? Or are you the new buyer? I have the same car same year, what are your plans for it?

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Anyone have working links for exterior parts?

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So... I'm not sure how to explain the stumble...

 

Let's say I'm merging onto the highway in 3rd, I floor it because I want moar powah baby. Then instead of feeling the engine power/boost, I get this stumble. It will stumble between 3k and 4k rpm and then stops stumbling as it accelerates.

 

Sometimes I wonder if it's a boost issue. However, I also wonder if it's fuel pump issue (sometimes when I put my key to ON and you expect the fuel to pressurize, I hear what can only be described as a small whale/dolphin making a low volume mating call off in the distance -- car starts and runs seemingly fine). edit: I should add that if it's cold and if I accelerate up a hill at very low RPM it will surge like no tomorrow.

 

TYPE OF STUTTER/STUMBLE

Steady throttle/Increasing throttle/Both: both

 

MODS

Intake: stock

Exhaust: stock

Fuel: 91 pump - no noticeable change on 94 pump

Turbo: stock - td04hla

Engine Management: stock -- own a tactrix v2

Tuner and revision of tune(if you don't mind): none

 

MAINTENANCE

Sensors changed: none

Plugs changed: 1 step colder iridium

Coil Packs changed: none

 

OTHER SYMPTOMS

Check Engine Light: nope

Etc: -

 

RESULTS

What has and hasn't worked for you: changed to colder plugs and may have reduced stumble slightly... however, still there

If something worked, how long has it been working for: -

I’m having a similar issue I have a 03 BL5 b4 spec B jdm, I did plugs but what I’m thinking is maybe my coils are bad and maybe spark blow out? Seems to only be under boost. I did plugs and maybe that’s my next step [emoji2371]

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I’ve been reading through the thread, there’s a lot of information on here!

The issue I’m having is very similar misfiring and sputtering really back at around 2500rpm+ then kind of gets better. Now this is only in 2nd gear and up. Climbing hills even worse almost stalled out. I have a 2003 legacy B4 spec-b from Japan the car has had its first winter drive within the last two days. Now like I said everything is similar but no CEL. I will be doing plus and checking them tom. Anyone have any suggestion because of the no CEL? Any help would be appreciated thanks!

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