I thought it about time that the Z's setup was brought up to date (seeing as some of the settings are years old now) so I took her to Noel's for a tuning.

 

Before: 359.9bhp, 399.6lbft

After: 418.1bhp, 453lbft

 

A relatively measly figure compared to some of Noel's recent successes, but a decent improvement all the same. I'm waiting for him to send over pics from the session and the dyno charts.

 

He identified that both o2 sensors are lazy, and carried out a bit of plumbing work to tidy up the engine bay a little more.

 

Nice to meet you Noel, and I'm sure you'll make a good MEO! :thumbup:

Edited July 17, 201312 yr by EvoluZion3

Nice increase that Dave :) bet you're happy with it, and they are still respectable figures! :thumbup:

If you get the graph and wheel figures I'll add you to the dyno section. What mods do you have?

Today I had my first chance at opening her up and seeing how she ran after the tune and I have to say that there is a noticeable improvement in how smoothly the engine runs and how much more evenly the power comes on. Beforehand, say in 3rd gear, when flooring it there'd be a bit of lag (not necessarily turbo lag), then the car would accellerate very well, then there'd be a brief flat spot, then accelleration again. Now the power feels more evenly spread and comes on earlier in the rev range, making it more driveable on the road. The car misfires less (if at all) and the strong smell of partially-burnt fuel has almost gone. Noel had told me she was running quite rich before the tune. I think the next things to look at are improving airflow to and from the engine [i wish I hadn't sold those AMSs now!]. Even though the BHP number is lower than I was hoping for, I had asked Noel not to push the maximum performance as I was looking for a bit of a trade-off with reliability too, so Noel has mapped for higher boost than the 18psi I am now running. Numbers aside, so far I am very pleased with the general improvement in actual performance on the road and I guess that's the main thing for a road car. Well done Noel :thumbup:

 

 

My performance-related mods are here:

 

2990cc Engine rebuild

Wiseco 87.5mm forged pistons

Cometic head gasket

DeatschWerks Highflow Pintleless 555cc injectors

TurboNoz chip

360 degree ballbearing turbo rebuild

AMS stage 4 3" Expansion split downpipes

Labree 3" decats

Labree 3" full exhaust system

ApexI Powerflow intake

GReddy Profec E-01 boost controller (running 18psi)

JWT Flywheel

Z1 Motorsport sidemount intercoolers

Koyo radiator

ApexI Super-AFC2

ApexI Twin-Chamber BOVs

SGP lightweight underdrive crank pulley

Manual cams

Series 2 PTU

NGK Spark plugs

Plenum water bypass

Hardpipe intake kit

AIV removed

EGR bypassed

Hybrid T/T -> N/A Single-piece lightweight propshaft

N/A R200 Differential

RPS Organic Sport Clutch

I'd imagine with that list of mods, that's 'wheel' horse power?

Nice one Dave....

 

.....And good work again Noel!!!

 

Richard:thumbup1:

How does it feel?

I'd imagine with that list of mods, that's 'wheel' horse power?

 

That's what I initially thought Si but Noel's confirmed it's flywheel power. :/

 

How does it feel?

 

Not as good as it would with 518bhp :D

That's what I initially thought Si but Noel's confirmed it's flywheel power. :/

 

 

 

Not as good as it would with 518bhp :D

 

That depends on how it's achvied, 500hp in one lump that requires a mile straight to build the boost is useless. 400hp that arrives in the right place and on demand instantly is going to be more fun and more useable. In the real world it could make a faster car, that's an extreme example.

Where the turbos modified when they were rebuilt?

Where the turbos modified when they were rebuilt?

 

Just 360 degree thrust bearing mate.

Here's what Noel's sent through so far. Solid line appears to be RWHP before and after. I thought the dashed line would be torque but I can't match the line up to the numbers at the bottom.

 

Max RWHP was 363.6