Also, as far as I understand it with my humble education on the subject, a Turbo doesn't give as consistant of a Dyno Curve as a SC does. Peak HP means nothing when it's only in spikes. Although the torque is quite impressive, I admit.

For example, look at the MEVI. On a NA Maxima, it doesn't add very much more than 5 or 8 peak HP and TQ, but because it extends the Dyno Curve so well, it removes .4 seconds out of the 1/4 mile.

Not to mention the Turbo is not yet proven as reliable as a SC.

IanS

 

Congrats Matt!!!!

Is the J&S detecting any knock with the 13psi?

 

Ive got a little retard dialed in but I havent had time to play around too much yet so I cant say for sure if it is or not on my stock 98 ECU, I know it would on my 96 G-Force NA modifird ECU I'm just kinda scared to run it yet, LMFAO!!!

 

PHILLY!!!!!! Matt, I have to see the car if you come up here to Philly.

 

 

You dont want to see his car you want to be at the track and watch his car and the jaws drop of many people , when he beats them

 

I want to see mid 12's

 

What about snow tires?????

 

Hell, you want a tour of the city and the surrounding areas, I'll gladly give you one. and for the small price of getting a ride around town in that monster!!!

Seriously, if you do come up here to Philly it would be SWEET! I'd be more than happy to answer any questions that you might have about the area. I've lived here for almost a decade now and it's by far the nicest place in the NE that I've lived.

 

Your damn right I do! ****, I've never been to E-town, but to watch Matt run there, I would have definately concider popping my cherry.

 

Well I had a little time to test today and sure enough it is detecting some knock. Right as the RPM's cross over 6k and the boost cross's over 10psi it detects some light knock, one cylinder 2 degrees and one cylinder 4 degrees. I had to turn the sensativity way up to detect it so the knock I am getting is very light and not even auidable so its not damaging at all, the J&S is just so well tuned to the knock sensor freq. that it can pick up such low levels of knock.. It also now picks up the motor noise again when I shift it hard. So I have to dial down the sensativity and play with the boost retard to tune it properly. With EGTs at 740c peak getting some knock now means that as I tune it leaner the knock should come on sooner. So having the J&S is needed for high boost, because with out it you would never know.

Now if take out the stock 98 ECU and put the G-Force normally asperated modified 96 ECU back in the knock and retard will be a wole nother story. I do plan on trying this on the dyno so I can see if I get more power with the G-Force ECU, I think I will.

 

Doesn't it feel nice to have boost come on at 2k?

Good going!

 

I really need one of those JS gadgets but cant get it now

 

Come on Jamie we only need one more to make 10

 

How much is it through the deal? Depending on price you may have your tenth

 

How much are they?

IanS

 

http://forums.maxima.org/showthread.php?threadid=130453

List price is $525 for the unit, 10 or more we are at $472.50, a savings of $52.50 and shipping is included.

The gauge lists for $199, GD price of $179.10

Closes on the 24th.

 

when you're in philly race with us at ATCO!!! can ya let me borrow your ECU one of these days just for the track.? i wanna see what that thing can do on an N/A car. have you figured out a way to get it working without a MIL on a 97? wow 13PSI!!! do you have an intercooler for that blower?

 

Sure you can borrow it. Nope i havent figured it out yet. No inter cooler

 

Well I just test drove the car with the G Force NA ECU and all went well. When I started it up it ran pretty well, better than the stock ECU did at first with the 370cc injectors. I did warm the car up first so I think that had somthing to do with the easier starting. The motor ran pretty well as it was learning the new pulse width for the injectors so I think the fuel pressure I have it set at is perfect. When I took it out on the hwy for some 2nd-3rd gear test pulls it ran like a champ. I dialed in some heavy retard just to be safe and eased back toward full timing. It was best with retard starting at ~6psi an pulling ~1.2 degrees per lb of boost. With the stock ECU I had to retard starting at ~9psi and pull ~0.8 degree per. Once again with the G-Force ECU I am looking for midrange hp and tq, and it felt like it helps. I hope to dyno in a few weeks and compare both ECU's.

 

hey mardigras, congrats on your max. I got some boost too. I have a 95 5spd with a V2 with a 2.87" pulley, 370cc TT injectors, custom CAI, volvo intercooler, custom programmed JWT ECU. Haven't dynoed it yet, car gets around 9-10 pounds boost, I was playing around today and down shifted into 2nd at 50, it hit ~5000 rpms, some scary s***.

 

2k 5000 rpms, yea its a blast, thats what I do when I make test runs, I down shift to ~4-5k in second and run it up through the top of third. How do ya like the JWT ECU? What kind of power do you think you are putting down? Got any pics of the intercooler set up? Did you run the 2.87 with out the intercooler to see what kind of boost you got before? Have you ran it at the track yet? You should be consistant mid to low 13's.

 

Hey, i had some pics but they got erased. I recently bought this car with all the mods on it, haven't dynoed yet, the guy said it gets around 350hp. But I gotta go dyno it to see if he's right, the JWT is great, it has always had an intercooler. He also gave me volk te37 rims but I sold them.

 

Ahh, so your the one that bought it...

 

yep

 

Congrats

 

350 whp or bhp? If thats whp you've got no room to grow because thats about where the 370cc injectors max out at stock fuel pressure. I bet he was talking bhp. If it is whp be carefull if you add more boost because you could run out of fuel and have bad things happen.

 

thanks, not sure, what he meant, these are the injectors from the 300ZX TT, are those 370cc or larger? Thanks.

 

Yes the TT injectors are 370cc

 

I put the 3:1 FMU disc in last night and it runs really well with it. I can't say I noticed a big difference but if feels a tad stronger. The EGT's went from ~720c peak in a 2-3-4 run with the 4:1 disc to ~780c peak with the 3:1, which is pretty darn good.

I gotta get to the dyno!

 

Sounds Sweet, Matt!!!!

When are you coming up to Philly? I gotta see this thing! Wuhahahahah!