This is my dyno sheet from getting tuned by Moncef.
2012 G37S Sedan 7AT

Red=custom 2.5in testpipe/catback, stock intakes with AEM filters, stock tune
Blue=Same+Z1 3in intakes(squished), tuned

Warning to those getting Z1 intakes installed at the shop he tunes out, I was expecting for the radiator core support holes to be widened to accept the intakes, instead, they were squished through the existing holes. This is not Moncefs fault and he did great work regardless. I'm not in a financial situation where I can re-dyno the car after correcting this, but I'd imagine it may pick up a few hp here and there after making the hole big enough to not kink the intake tubing.

Correction on my part, I hadn't taken the bumper off yet to check. The front plastic hole was hollowed out, the hose was being crushed by the inner metal support. this was 90% resolved by adjusting the angle of the MAF housing and supporting the filters to keep the hose from twisting. The last tiny bit was fixed with some trimming of the metal support. very well could have been at that 90%mark when installed and once the filters hung down on the drive back they twisted.

For a simple bolt-on car I am in no way unsatisfied with the numbers, especially since it seemed to Moncef that I may have had a bit of bad gas or the exhaust setup may not have been ideal and the car was pulling more timing than it should have been.
flames were large on the flame map, gas mileage seems to have gotten better, the shifting is noticeably firmer, the car also idles and crawls much better.



I've found the opinions/details on Moncef's work to be sparse in this forum, and I'd love to see some other numbers from people who have gotten tuned by him with similar setups.

 

Flames

 

He could have given you the option for an extra hour of shop time in order to not crush the tubes. Either way... his shop, his fault.

That seems the general opinion, that Moncef knows the Nissan platform as well or better than most. I don't think anybody questions his expertise.

Bad gas? Flame map on a budget? OK.

 

Numbers seem about right. I got 306whp with TP, CB Top speed exhaust and stock intake. Now have 2.75 CAI and 2.5 Soho dual CB exhaust just haven't had a chance to do a retune on it.

 

The graph looks good. You averaged between 20-28 WHP difference after 4k and carried it until limit. The rest will be in exhaust work.
Any type of aftermarket headers will bring you closer to 320 and if combined with bigger piping overall you might pick up another 10-15whp.
A safe average on 93 would be 325whp.

 

Correction on my part, I hadn't taken the bumper off yet to check. The front plastic hole was hollowed out, the hose was being crushed by the inner metal support. this was 90% resolved by adjusting the angle of the MAF housing and supporting the filters to keep the hose from twisting. The last tiny bit was fixed with some trimming of the metal support. very well could have been at that 90%mark when installed and once the filters hung down on the drive back they twisted.

[If I can get the cash (and wife approval) I may end up swapping the exhaust out next year, but otherwise don't want to mess with it too much unless the engine goes out. In that case cams, headers, oil pump gears, bigger throttle bodies, and ported manifolds are all fair game.

 

Those numbers track - I've got 314HP off FI resonated HFCs, FI resonated catback, and 2.75" long tube CAIs.

Would have been higher according to Jon at Z1 but I have a 350Z manifold on it which hobbles high end HP some - but I doubt more than 15 HP max. Did good things for the area under the curve though.

 

GTK. It would have sucked to have this detail hang over the project every time you think about it.

 

You should fab up some simple brackets from the metal bumper support to hold your filters motionless. I've got pics of what I did in my build thread - nothing you can't do with home hand tools.

 

For some reason the dyno operator used the raw / uncorrected HP. Typically the results are corrected to STD / J607 which is 70F
This means your 85F tuned run was not temperature corrected and once that is applied you car made more HP.

 

I've got it kind of rigged up with some paracord, although depending on how it looks after some miles ill definitely consider it. What did you use to attach the hose to the braket?

Corrected peak would be 326whp on the tuned run 295whp untuned, very good numbers without headers and with an exhaust thrown together in a weekend lol

 

DYNOJET... 312HP 254TQ 3" admin cai, FI RHFC, ARK grip CB, 90F, 17.96 humid and STD:1.07.

 

I used T-bolt clamps to attach the filters to the pipes, and just used the nut on the T-bolt to secure the whole thing to the bracket.