I went to the dyno after putting the almost final piece of the puzzle, the J&S Safeguard, the last and final will be upgraded fuel system, already have upgraded pump.

Anyway, I finished the day with 355 RWHP, see pic below, I was happy with the AF, the in car was slightly lower and I assume more accurate. The table is data logged from the e01

I have a question or request comments on the boost numbers, I am new at this as the 300ZX just has the little analog gage, no where near the accuracy of the e01 display, so I ask if the boost numbers look OK, I mean where they peak around 5K and slightly tail off at the end, if so what boost would you call this run, 8 because of peak or 7-7.5 as a rough average.

I am happy but at 8 psi I thougth I would get a little more, maybe a dual exhaust is in order.

 

How are the Torque numbers?

 

Did you have te e-01 set on auto mode or manual? It's not uncommon to see a dropoff in boost if you use the manual mode. At higher RPM, there is less inertial load on the engine, so boost pressure can falloff. Boost is more load dependant, rather than RPM dependant. If you use the auto mode, the fuzzy logic controller will automatically make adjustments to keep you at your "set" boost pressure.

otherwise, the A/F's look great. I suspect you might be taking too much timing out?? Or are you running stock cats or a restrictive exhuast? All of those things could be keeping your HP down.

 

I was using manual so that makes sense, I assumed it was normal but just wanted to make sure. The AF's do look good, I was happy, they are using ACP's MAPS. As for exhaust I have Kenetix pipes, but I am thinking the Y-pipe, although good for NA is probably not enough for TT.

Unfortunately they can never get the signal to work on my car, they can on all other 350Z's but never mine, so I never get RPM's or Torque, I am going to have to go to another dyno and see. But that will probably have to wait until I do the fuel return system, I am happy with the power and AF results.

 

Couple of quick questions if you don't mind.

What exhuast are you running after the y pipe?

How much timing are you pulling?

That number is pretty low for @8 psi and your A/F seems pretty good. The issue is else where, probably timing or exhaust restriction. If we had TQ it would help narrow it down.
Gary

 

I have a japtrix y-pipe which is like the top secret one and a Fujitsubo Legalis R exhaust, I think that going to a dual will definetly help, I was thinking I would be around 375 at 8 psi.

As for timing I am only pulling around 1/2 degree per pound above 5 psi for the boost based retard and on the lowest of 2 degrees for the RPM based retard and I have not seen the knock light come on the J&S.

I will try another dyno to get the torque.

 

Hey Gus, love that a/f flatline

Using the SafeGuard settings I have, did the units led light ever come on while doing the runs ?

I am waiting for a couple more cold fronts to come, and 1st really cool day, I am off to do some runs.

 

Yeah, great job on the MAPS Tim, I just tweaked a couple of cells from the street runs I recorded, otherwise it is all you, nice job.

I am going to have to play with the J&S as the light never came on so maybe I am pulling too much timing, wish we could log timing.

 

1st, do what the instructions say, and tap near the knock sensor (its at the back of the motor, near the inlet to the fuel rails)
Make sure the light is coming on.
Then take it on the road, and adjust the sensitivity

 

looks good gus i have the borlas td and im planing on gutting the stock cats for now...

 

Very nice A/F. Tim that map looks real good in the A/F Dept.

 

before you swap exhausts (I doubt it will make any difference frankly), try to find out what other TT Z's (or any FI Z's) put down on that dyno

 

A little rich on top but not bad. I would think with test pipes you'd be a little higher. At 8 PSI, with test pipes and a Greddy EVO2 I just finished tuning a car to 449 WHP at 8.2 PSI but the AF mixture was at 11.5:1 or so across the board and tappering to 11.75:1 at redline (injectors going static).

 

That's a nice number, about 20hp more than average for 8psi. What set up are you using? Fuel/Timing control?

Z1, Pettit is a big RX-7 tuner and their dyno has been documented well within normal standards.

At 8psi with test pipes 400whp should be a minimum expected output for a 350z with the Greddy TT kit with decent tuning.
Gary

 

Well if I am supposed to be putting down 400 RWHP at 8PSI with good tunning and we can see the 8psi is pretty close to stable, the AF looks as good as you can get WHERE is the HP going? I have Track Model Rays so wheels are not an issue.

As for other FI the only one was an ATI setup and they got 345 RWHP with Stock pulley, Nismo Headers, RT cats and Stillen exhaust and that was in March when it was a little cooler.

I am going to have to go to Miami where ACP dynoed his for comparison, plus I need a torque curve anyway.

 

I guess another thing would be that maybe I am really running closer to 7 PSI since it tails off once it passes 5500 or so.

 

Well I was able to get the boost to stay steady but still not at the 400+ and now it is richer even though I removed some fuel at a couple of spots. It was more steady boost around 7.5, new number is 382 RWHP.

 

Good number. I personally think 380 - 400rwhp is safe with stock internals.

 

Are you running the stock spark plugs. If so that could also keep your numbers down.

 

Nope 2 steps colder.