M100 S2 boost hesitation

[Barrykearley]

So Danny’s Elan has a hesitation on boost - like there’s an air leak.

I have the workshop manual but seem to be missing section EMK. Mainly I’m looking for the diagrams of what’s what and what’s where. Theres one pipe from what looks like a solenoid upto a two port piece on the airbox that I can pull off by hand - so I’m gonna get some more clips and pipe later today. 
 

Im not in anyway familiar with the Elans setup and would just like some pointers with regards to this.

[exeterjeep]

M100 manuals are freely available to those on LEC,

LEC links to 

https://d4pinky.wixsite.com/m100-documents and on there is 

https://b64c533c-a9e4-41d4-a41f-7b1948b447f5.filesusr.com/ugd/56b1ab_a7e1865b3dab4e6cb2cf379a6ccad9b5.pdf

[MPx]

Two things come to mind.  There's a very thin vac pipe top left of the engine when stood at the front - can easily come loose and cause a hesitation.  Also the cats on an S2 (particularly the precat) are known to self destruct and block the exhaust flow - similar loss of performance. 

The guys on LEC will have more and better info/ideas

[chipp]

Does it go into limp mode briefly, could just be a wastegate wiggle.

[Barrykearley]

I get no CEL lighting up. A Quick Look over it and the one pipe from the boost control frequency valve is slightly loose and can be pulled off by hand. The one to the boost gauge transducer is breaking down and is all powdery

[Dave Eds]

@Barrykearley While he is in that area maybe it would be worth checking/cleaning the boost guage transducer earth, as they can be known to play up and cause erratic boost guage readings (although probably not any engine running issues).

[Barrykearley]

So todays findings.

boost issues are noticeably different depending on where the heating control knob is located. Also gentle throttle application results in nice boost while flooring it quickly and it’s not so nice.

weve ordered a load of replacement piping and will replace it all. I’ll also download elanscan as the CEL came on when we took it down to the storage barn.

the throttle cable has some play in it - maybe too much - but I need to get that scanner on the car.

new roof seals arrived this afternoon as well 🥳

[USAndretti42]

Where did you get the roof seals from?

[Barrykearley]

Chap on LEC sells them - they do look pretty amazing tbf

[Rambo]

It's Jamie the Seal fae Rosyth.

[USAndretti42]

I've heard his seals are excellent. I didn't know he was selling a batch right now.