edc

Have you cleaned up the throttle body and intake? I'd also check for any air leaks around the throttle body and plenum. They won't show any CEL or code as post MAF. 

6 minutes ago, phazed said:

One more thing after fitting the immobilizer and ECU back into position. When I acquired the car, the heated rear window didn’t work, and when I fired it up this afternoon, I thought I would give the button a press and, yes, it works!
it also has reversing sensors, and they work as well. I would never have believed it!

MOT booked for next week after having alignment done so fingers crossed…

I would have thought you'd have seen the sensors in the rear bumper given the amount of work you've done recently? 

8 hours ago, Nitro V8 said:

@edc Do you still have the Dyno plots and can you re post them?

Or can you remember the detail of what the actual gain was and where it was in the rev range? 
Cheers

Here's a couple of relevant old posts. Pick your way through if you haven't already 

Dyno plots seems to show here

https://www.BoXa.net/topic/53075-blue-boxster-s-with-18-sport-classics/page/11/

My Dyno showed a gain but the link in my threads are dead now. 

996 plenum or air intake distributor tube is showing as about £50 now. Was £35 plus a few years ago. 

10 hours ago, Patt said:

We spent a few fun Saturdays sorting this out, didn't we Ed.

It was only the other week I threw away the "plan A"  drainpipe 😆

A good few weekends templating then actual done in an afternoon after fixing a couple of small air leaks. 

In will my check garage at weekend but 99% sure I have the throttle body and plenum as I was going to do this for my 550 too but gave up a long time ago. 

996 throttle body and plenum. I have spares in my garage if you are looking to do this mod. 

For example, your research points you not to do the throttle body, but my Dyno showed no loss but a gain. Horses for courses. 

Don't worry about the figure itself, it's the change you're looking at. 

Likewise I used Charlie at SRR as down the road from me. Base line then runs after each mod. At the end I got all the graphs overlaid for my old 986S. 

You can do a basic test with a sound meter app on your phone. 

I have written this before a few times over the years. I've had quite a few permutations of exhaust across 2 986. I finally on my 2000 986S I had the standard exhaust. I then added the Toyosport box then later the manifolds. There is a change in tone and a small reduction is drone both in volume and spread across the rev range with the latter. My current 550 has had different combinations of 100/200 cell cats, manifolds and Carnewal box. 

This has been done before so definitely worth a search. 

Look for some old posts by @Berty987The other big difference is the manifolds and cats. The 987.1 has a better flowing design than the 986. 

I put my 550, on 105k ish at the time, on the Dyno a long time ago and it wasn't running perfectly at that time and it did 272bhp from memory. A box fresh 987 3.2 would have been 280bhp in theory. 

I can see if being the same or more as a 987 with some minor basic mods. 

32 minutes ago, phazed said:

Broken Springs seem quite common amongst all cars out there. Is it due to manufactures using a cheaper grade steel or are springs made with the minimum amount of material required and have a finite use life?

This never used to be a thing and in fact, I have never had one broken spring since my motoring career started in 1970. maybe I haven’t had any broken springs because I have never had what some may refer to as, “a late car”, 

I'm sure it's more a case of heavier cars and more pot holes and speed humps.

Was it raining or wet on the road during your journey? 

29psi front is the book pressure for 986. 

Steve Strange is Douglas Valley. 

14 minutes ago, phazed said:

Any idea what these are? They were in the boot.
 

Look like the front boot scuttle covers. 

Good work. Can't quite tell from your pics but did you put in a rear lower brace bar? Cheap part and seems a shame not to do it. 

I haven't changed mine but past posts show good experience with the Philips ones. I'd get one of

https://www.powerbulbs.com/product/philips-xenon-whitevision-gen2-d2s-single

https://www.powerbulbs.com/product/philips-xenon-x-treme-vision-gen2-d2s-single

I get the rationale of those who trade for a newer Boxster and make some assumption they are all looking for something different. But if you are not then buy the same or similar again?

You can also change the bulbs. The HID lose some efficiency with use over the years. 

I'm lucky to have had 2 V8's, 4.4 BMW V8 in an L322 and also a C55 AMG. 

I'd like to try an E39 M5 (tried one but not for that long), a Ferrari V8 (perhaps an F355 is in some Dreamland attainable!)