speedemn

iTrader: (14)

I was able to keep all my mods unchanged from my last dyno last year to my first dyno this year. The only change is the JWT ECU so that I can substantiate the gains from the ECU alone.

Red line is last year (with all the mods listed below in my sig.)
Blue line is last night (mods listed below in my sig. + JWT ECU)

All values are SAE corrected. I got what I was hoping for in the midrange... a nice 15whp or so increase. My peak numbers also went up, which was a nice bonus.

Jeff92se

iTrader: (82)

Nice jump in the 3700 rpm range. Nice! At 15% loss, you are at 225ish/ 218ish ftlbs. Right at 2000 maxima numbers?

speedemn

iTrader: (14)

Hey that is a good observation. I never thought about 2k/2k1 Maxima numbers. I guess that would be in that range and their curve looks similar to that too doesn't it?

Now I just need to get better cooling (JWT pop charger isn't doing it for me) so I don't run so hot at the track!

Kevlo911

iTrader: (36)

5speed 00-01 make about 186hp at wheel

Taken2DaMax

iTrader: (5)

what an improvement with the ecu, you can just see were the ecu helps out.

My impression from your numbers from last year versus now is that the JWT ECU only gave you +7hp and +8.3tq, isn't the ecu supposed to give you more or am i missing something.

speedemn

iTrader: (14)

Yeah what you are missing is that JWT gives you a 15whp or so bump in the midrange to compensate for the loss that the MEVI guys get when going from the USM to MEVI... the peak numbers do not change drastically.

At least that is my understanding of what the JWT ECU does (along with the raised rev limiter - 7200RPM in my case).

I am not sure if any of the other guys with MEVI + JWT ECU dynoed just before and after ECU... but I would be curious to see their results too.

bruteMax

missing the area under the curve...

Taken2DaMax

iTrader: (5)

so it's more like 15 hp is spread throughout the curve?

I30tMikeD

iTrader: (8)

Great #'s! Thanks for posting the dynos!

Dave B

Excellent job We need more people like you on the Org.

stephenlc

iTrader: (1)

Wow I thought your hp would significantly drop after 6750 rpm, but it stays pretty flat. The torque drops off though.

Good numbers, if only you could keep that torque curve flat all the way too 7200 rpm, your car would haul ***.

speedemn

iTrader: (14)

How can I really control that? Power adders to lift that top end torque that is... if the HP stays flat, I was hoping that the torque would too... but that is not the case.

stephenlc

iTrader: (1)

I really don't know. One of these smart guys on here could tell you.

Stephen Max

iTrader: (59)

It is not possible for them both to be flat. The relationship is hp = torque x rpm/5250. If the torque is flat the hp rises with rpm. If the hp is flat the torque drops.

Dave B

It's scary how close our pre-JWT dynos are. Look at how the curves are exactly the same. I'd imagine my JWT ECU power numbers are similiar to yours.



MEVI, hybrid intake, WSP y-pipe, B-pipe

DAVE Sz

iTrader: (2)

Why do you have that terrible drop in power at 4.7k rpm Dave? He doesn't. Is it cause the switchover was set at the wrong place?

Iilac

iTrader: (65)

Thanks for the info, I have to get mine dyno soon.

speedemn

iTrader: (14)

Yeah it does look like Dave B has set his RPM switchover point a little low. That's what mine looked like when I set it at 5000RPM. So I moved it upto 5200RPM and that made the curve continuous.

speedemn

iTrader: (14)

Dave you still do have a bit of a bump in the midrange, whereas mine was a drop. I am pretty sure that my midrange loss was one of the greatest losses compared to anyone else over here who went USM to MEVI.

Dave B

I have a manual VI switch and I was experimenting with the best switchover point. This was 2 years ago when none of us knew the best switchover. I think my dyno clearly proves that activating the switchover too early kills power. The big power drop came from activating the switchover at ~4600rpms. As you can see it caused a big drop in power. The next dyno was with a 5100rpms switchover and the curve became relatively smooth.


.

My largest torque loss was ~12wtq.

deezo

iTrader: (3)

Good info.

cw96

iTrader: (31)

I have a Techonosquare ecu and have been debating about throwing down the cash for a mevi while hoping techosquare would solve their rev limiter issuses.My question is could I expect similar dyno specs up to 6500 rpm with the same mods as I have seen people post using the jwt ecu. As my car is auto and I stay in the rpm band longer thanks to my longer gears I'm assuming I could still benefit with the mevi and techo ecu.I just will not be able to get the full advantage out of the intake without the rev limiter being raised.Seeing speedemn's dyno #'s without the jwt ecu provoked me to ask hoping I could get the same results.

deezo

iTrader: (3)

You will benefit from the VI along with your TS ECU. Peak HP of the VI is around 6000 as you'll see in the dyno above. The extended limiter allows you to use the HP in the higher RPM range. Now that I have the VI working, I just take it up to 6000 and then shift.