I've just updated the power board in the second post with all the results from yesterday. I'll try and fill in some of the gaps now...
@Oldguysrule's 2.8 was on it's third power run, the first was the baseline before mods; the second after the manifold and ECU change; and yesterdays after fitting a cone filter and bored out throttle body. It started at 197.5, then to 215.1 and yesterday gave 222.1bhp. That's an increase of 24.6bhp over the cars baseline. Doesn't seem a lot, but the overal drivability on the car has hugely increased. I've sat in the passenger seat and it pushes you back in to the seat!
In comparison, @5harp3y's followed pretty much the same journey now apart from the throttle body. 1st run 205.8, yesterdays run 217.4 - so a increase of around 12bhp. Doesn't seem as much on paper, but the car hasn't done much mileage since the manifold was fitted so may need a bit longer for the ECU to adjust.
@spurs fan in a coupe 2.8 manifold swap ran at 211.1, again likely needs some more miles on as it was fitted the week before.
Not much more can be done with the 2.8s beyond the manifold swap, except for taking the engine apart and switching cams. Doesn't really increase the power, just moves it around. So realistically around 220 is pretty realistic for the swap.
An impressive run from @Mnbrennan's Imola Coupe, the power line on the graph was almost as straight as a die!
@Ianmc brought his S54 Coupe along, which has 230k on the clock returned 304.2. The dyno guy reckons his MAF is faulty as the fueling was "all over the place" on the graph. Ian intends to change the MAF and come back for a rerun at the next session.
@Nodzed brought the Alpina Roadster along, and again Charlie reckons the MAF is likely faulty for the same reason as Ian's Coupe. That said it still ran a decent 283.8. Again this will likely get rerun with a new MAF at the next session.
People may not know that @notzed is @Nodzed's son Martyn. Martyn brought his "family friendly wagon" along for giggles, a 335i estate with decat downpipes. As it's not a Zed it doesn't qualify for listing on the power board, but definitely worthy of a mention as it was only .4bhp off the top spot, which incidentally is held by his dad. There were a few minutes where Niall thought it had pipped his ///M Roadie, until I showed him it was just under. Poor Niall thought the world had stopped turning! But, it has to be said it's one hell of a family estate car!
@Shortie_gal's 2.2 proved to be as healthy as expected, hitting 169.7. It seems the 2.2's are pretty much consistently around factory/marketing figures, so this is a solid result.
Finally a shout out for @Rally's sons E30, which recently had an M44 1.9 from a donor Z3 fitted after he goosed the original engine. That pulled a healthy 143bhp!
Next rolling road session will be in a couple of months, so expect the board to grow a bit longer! We are starting to gain some interesting intelligence on the cars and engines through doing this, and I don't think I've seen a more comprehensive study on real world Zed engine performance anywhere else on the web!
@Oldguysrule's 2.8 was on it's third power run, the first was the baseline before mods; the second after the manifold and ECU change; and yesterdays after fitting a cone filter and bored out throttle body. It started at 197.5, then to 215.1 and yesterday gave 222.1bhp. That's an increase of 24.6bhp over the cars baseline. Doesn't seem a lot, but the overal drivability on the car has hugely increased. I've sat in the passenger seat and it pushes you back in to the seat!
In comparison, @5harp3y's followed pretty much the same journey now apart from the throttle body. 1st run 205.8, yesterdays run 217.4 - so a increase of around 12bhp. Doesn't seem as much on paper, but the car hasn't done much mileage since the manifold was fitted so may need a bit longer for the ECU to adjust.
@spurs fan in a coupe 2.8 manifold swap ran at 211.1, again likely needs some more miles on as it was fitted the week before.
Not much more can be done with the 2.8s beyond the manifold swap, except for taking the engine apart and switching cams. Doesn't really increase the power, just moves it around. So realistically around 220 is pretty realistic for the swap.
An impressive run from @Mnbrennan's Imola Coupe, the power line on the graph was almost as straight as a die!
@Ianmc brought his S54 Coupe along, which has 230k on the clock returned 304.2. The dyno guy reckons his MAF is faulty as the fueling was "all over the place" on the graph. Ian intends to change the MAF and come back for a rerun at the next session.
@Nodzed brought the Alpina Roadster along, and again Charlie reckons the MAF is likely faulty for the same reason as Ian's Coupe. That said it still ran a decent 283.8. Again this will likely get rerun with a new MAF at the next session.
People may not know that @notzed is @Nodzed's son Martyn. Martyn brought his "family friendly wagon" along for giggles, a 335i estate with decat downpipes. As it's not a Zed it doesn't qualify for listing on the power board, but definitely worthy of a mention as it was only .4bhp off the top spot, which incidentally is held by his dad. There were a few minutes where Niall thought it had pipped his ///M Roadie, until I showed him it was just under. Poor Niall thought the world had stopped turning! But, it has to be said it's one hell of a family estate car!
@Shortie_gal's 2.2 proved to be as healthy as expected, hitting 169.7. It seems the 2.2's are pretty much consistently around factory/marketing figures, so this is a solid result.
Finally a shout out for @Rally's sons E30, which recently had an M44 1.9 from a donor Z3 fitted after he goosed the original engine. That pulled a healthy 143bhp!
Next rolling road session will be in a couple of months, so expect the board to grow a bit longer! We are starting to gain some interesting intelligence on the cars and engines through doing this, and I don't think I've seen a more comprehensive study on real world Zed engine performance anywhere else on the web!
Not nice ..... they did fall off though 
