Back on topic...
I have been doing a lot of data logging over the past few weeks and I am just waiting on a map revision once everyone concerned has time to fit me in (I am in no real hurry and paying customers come first
)
Anyhoo... I have been having a few issues with boost control. I am currently running just N75 having taking the MBC out of parallel and the car is driving very nicely but I am running the ECU on reduced load through Unisettings to curb the boost spikes and random boost control... would appear that as I increase load to get boost much above 1.6bar then it becomes a lottery as to what I get... Saturday afternoon while taking Prawn out for a little run I was hitting 1.5/1.6bar on the outbound trip and 2bar on the inbound trip... the EGT's went higher than I would like and she felt less urgent than before... obviously the really high boost is the reason but some boost control would be nice...
Anyhoo, I have backed off the load again until the revised map is ready and I can get her on the dyno for a more controlled test...
I do have a feeling though that I am getting to the limit of usable/reliable boost at around 1.6bar with the combo of the small port inlet mani and a T25 flanged hotside... much beyond that boost then flow restrictions kick in and all I get is heat...
Most of this is speculative until I get the revised map and get her on the dyno so in the mean time I thought I would try something that will at least help and be one less thing hampering potential for performance...
...a SEM inlet manifold :thumbsup:
Bill has one lying about the workshop in the usual 'if I leave this in plain sight of tuffty he cannot resist...' type fashion... ok, he doesn't really do that but its all the justification I normally need lol... so I took it home this evening and set about test fitting to see what work I will need to do to get it to fit how I want it...
The SEM and S3 inlet manifolds...
...the SEM has my R32 TB on it of course...
...bolted onto the engine...
...injectors and wiring loom sit higher and may need adjustment + wiring extending or re routing to allow me to fit the top cover. The FPR is sticking up the most as you can see here so tilts the cover up a bit... I reckon I can do something with it though...
...the trim at the front looks as though it will go on too but there is nowhere (currently) to bolt the EGT probe black box and the metal plates bolt holes don't line up with the SEM's mounts for it so I will need to do a little tweaking there too...
...the charge pipe also needs some work as the SEM moves the TB further forward and straighter than the OEM mani...
So, looking plausible and with a bit of work I reckon I can keep the top cover too...
<tuffty/>