Mk 2 EFI manifold dyno

[Stagdad]

Having dyno'ed my stag with the new manifold today i'm pleased with the extra torque shown right across the board, i already could feel that this was the case but nice to get it confirmed on the same rollers as the MK1 manifold session.Blue line is the new set up, red is the old. I have a slight difference in bank AFR so we have tuned to the lean side for safety to the engine but i will be looking at this as the dyno guy said he noticed it as well and there was more to come if we sort that out. The difference could be fuel rail disign, injectors differing in flow rates or lastly but unlikely the ecu fuel triggers giving slightly longer on one bank. 200FtLb of torque i'm happy with that (for now lol)
Cheers Steve

[Goldstar]

Good result that Steve. I assume the driving experience is very pleasant. Now you're at this stage you can take me out in it next time i pop over

[Stagdad]

Yes Paul, makes for very relaxed driving, don't need to change gear much.

[Seaking]

well done Steve. hope for a quick outing On Saturday .

Cheers Glenn

[Stagdad]

well done Steve. hope for a quick outing On Saturday .

Cheers Glenn

Yes Mate, rude not to.

[KOY 23]

Great result Steve. Always a concern that mods can decrease performance but not in this case.

[Stagdad]

Great result Steve. Always a concern that mods can decrease performance but not in this case.

Thanks John, yes I was worried that might happen .

[Carboy0]

Great result Steve, brilliant torque output from the long inlet tracts. You should be able to pull any final drive you like with that engine.

[Stagdad]

Thanks Chris. Done anything on yours lately?

[new to this]

Well done Steve

[flying farmer]

Very useful torque increase Steve.
I have also had my Stag engine Estate on the rollers and will post the results shortly.

Neil

[flying farmer]

Just had a quick look at the torque graphs and yours is making about 10-15lbft more through the mid range than the engine in the estate and the curve is also lovely and smooth.

I have been doing a few graphs for comparison purposes of all the other incarnations this engine has had over the years (Holley ,Strombergs, efi and two different sorts of manifolds.

I will add a few posts to the performance tuning the Stag engine thread which has lain dormant for a few years, and will add your torque and power curves to the thread as I think our two current engines are very similar apart from the induction system

[Stagdad]

Look forward to it Neil

[mike@thenook]

Great stuff Steve - looks like you’re now close enough to produce a dad-kit we can all purchase......(apart from Neil of course!)

[Carboy0]

Thanks Chris. Done anything on yours lately?

No Steve, the Stag has been wrapped up since October apart from one half hour foray in January. Need to get onto her for drive it day this month.