Long time reader first time poster.

I have a Harley Sportster Iron 883.

It did have a 1st stage on it (Screamin' Eagle filter and V&H Short Shots) and I *think* it's been tuned with the supertuner (I have the orange box as part of the sale with the bike) and I can see some reference to it on a previous receipt.

However, the V&H SS has been removed (live in an apartment complex and i'll be waking everyone up), so it now only has the filter on it.

The throttle was sticking open a fraction and it felt like it was running a little lumpy.  I investigated taking off and cleaning parts right down to the throttle body intake using throttle body cleaner - images attached.

There seemed to be a fair amount of oily deposits which were actually fouling the operation of the butterfly valve by a few mm. 

I think as a result of putting the stock exhaust back and not re-tuning it back to stock I'm assuming the engine is running rich.

I think the next step is to buy the supertuner cables from Harley Heaven and re-tune back to standard.

Two questions that i'd really appreciate some advice on:

Can advise if my suspicions are correct regarding the engine running rich based on the images and history?

Additionally, I've looked at a couple of Youtube tutorials for how to program the bike with Stage 1 settings - there appers to be pre-set values to choose from for the most common modifcaitons.  I didn't see an option within the software to return the bike back to stock settings.  Can anyone please advise if this is possible?

Thank you in advance.

Andy

At a guess i would say your bike was never retuned properly from standard.