Just got back from the dyno. My best run was 201whp/191.27wtq and this was with my stock ECU.
I will upload graph shortly. Basically I started off dynoing with JWT ECU. Kept getting inconsistant #'s so decided toswitch back to stock ECU and this was the result.

 

Nice #s! You are really choosing the right mods. Hopefully you can get the JWT to work right. Or use the vtec SAFCII to dial in the a/f ratios.

 

thats awesome, you broke 200's in a 4th gen N/A!

What are your mods tho? :\

 

Please send me the run files

kevlo2000 yahoo.com

AWESOME Numbers!

 

Stock ECU/MEVI/UR Underdrive Pulley/Warpspeed Y-pipe/Catco highflow cat/Greddy SP catback/Sun Automobile Hyperground system/Optima Redtop Battery

 

Can someone host pics cardomain is being useless

 

Send um to my email

 

Run 32 is stock ECU/MEVI/I/Y/E
Run 34 is JWT ECU/MEVI/I/Y/E

two things to notice look at the JWT ECU dyno how LEAN it is and look at how the power dips once i rev past 6500 with JWT ECU

 

good stuff!! so u lost 2wtq with the mevi??

 

 

i am going to send you one more from my last dyno before mevi

 

Awesome #s for a stock ECU. My tired old VQ makes that HP with +8 timing and a 13.5 A/F, without the SMT it's around 185~190 WHP. However you left your precats in, so that may explain why your A/F appears so lean on the charts. Speaking from my experience when I dynoed with the cataytic converter installed my A/Fs were much leaner. When I went with a test pipe the A/F was in the 12s at some points.

Oh and there are ways we can fix the inconsistant JWT ECU.

 

Joe you need to dyno when NEVo is there he let me dyno for 3 hours this time for $100 and we went crusing in the red SRT

 

MEVI Power ... hopefully the ECU gives some torque back ..

Can you send them to me as well. bizzy1999@hotmail.com

I think you're VI actualtor is closing after 6.5k

 

 

I lost no torque with MEVI....The next file KEVLO is going to upload will show my last run from when i dynoed back in december which is RUN 16 compared to my best run from today RUN 32 which was with stock ECU/MEVI.

Esentially all i got from JWT ECU was extended rev limit. there was no power increase at all. Look at run 32 and run 34 which are the two best runs.
run 32 Stock ECU
run 34 JWT ECU

Kevlo can you host the pics of her starpped down

 

Vroom Vroom

 

oh yeah that is what i am talking about

 

Wow, great numbers for stock ecu.

 

oh, i was just lookin at ur sig numbers before mevi and ecu, 182 hp/193 tq, and since u added mevi but still not the ecu, u got these new numbers 201/191

 

does any one see that comparison of run 16 and 32? The only loss is at 4.5k (well a couple of other dips). That is not a low end loss like everyone has been getting (which is now associated to the MEVI). is it possible the swirl valves are affecting this? Its like the USIM with a sweet high end increase.

 

So what does this mean? That a stock 99 ecu is just as good as a jwt ecu for other model yrs? Without the raised rev of course. From the dyno, I see no low end loss that was reported from others with the mevi installed. ANd it seems like the raised rev limit did not help you out at all.

How was the ride in that SRT-4 by the way? That thing kills vipers.
http://www.srtgurl.com/

 

No it does not it means 1999's are diffrent and JWT needs to work out the bugs on the Program. I am getting codes with the JWT which i think are hurting performance.

 

So if, and that's a big IF, jwt works out the bugs, you'll see more gains. Even if they don't, anyone with a 99 should consider this a viable upgrade on it's own. This corrects the problem of the power drop off at 5500 rpm. Adding another 1000 to the power band is huge. Granted this is the first actual proof, but the 99 ecu seems to adjust well to the mevi on it;s own. The gains are evident and the A/F is very good. Earlier model yrs have recorded losses in the low and mid range if it's not mated with a upgrade to the ecu. It does not seem so for the 99. You gained close to 20whp with just the mevi installed. Strange no tq gains were recorded though. If I remember correctly, tq is a by product of hp, and vise versa.

 

Wow. This is really great to look at. Just like jsutter said the only loss was a few couple of insignificant dips... Hardly anything at all.

And looking at this, the only thing that the JWT ecu gives you is an extended redline. Is it really worth the extra money?? Especially when the power declines dramatically after 6500.

Looking at the mevi w/ stock ecu vs. no mevi dyno, with gains past 4800 and really significant gains past 5700 with the stock ecu, I would think that the best route would be to save your money and just run the stock ecu with the mevi.

 

maybe you missed it but there is a loss from 2400k to 3400k about 10 tq

 

I think he was talking about peak numbers but to be honest i couldn't feel the difference when it was installed

 

that jwt ecu looks like all the did was raise the rev limiter.. other than that there is no gain from it.glad i havent sent mine in yet. i think im going to hold off awhile now

 

could be.. i could tell the differnece in my mevi compared to my usim..thats why i think im just going to do the 3.5 swap..

 

no they also did something with the AF look how lean it gets with the JWT ECU compared to the Stock ECU and even when its is leaned out it still doesn't make more power than my stock ECU.
I am Sending BEN my dynos he said they will come up with a new eprom for me

 

thats the USIM (green line). yes its less than the MEVI, so he gained in that area.

 

Nice Zach. Sorry I couldn't make it. Work is out of control right now.

 

Deezo, you should expect similar numbers. I would say 180-190hp and 175+tq

 

Its cool man but you gotta go when NEVO is Running the dyno he always lets me dyno for 2-3 hours for the price of 1 hour. Really cool guy

 

Was this 2-3 hours total with the usual wide band o2 sensor problems they have, or was it 2-3 hours of actual dyno runs?

 

Sorry to get OT here but what kind of filter is that? I've got the stillen one with the solid end but that one looks like it'll suck in a little more.

 

Your reading the graph wrong! The green line is PRIOR to the mevi install. This means he GAINED at one point 15ft/lbs. over the usdm manifold in that area.

 

Was the MEVI still open after 6.5k, bucause it looks like the valve may have closed. I've seen many dynos like this that show a drop like that when the valve closes accidentally/undesired (96sleeper).

What exaclty is Ben going to do with the new eprom?

 

I'm thinking the same thing. I know somebody else whose MEVI closes at 6300 rpm. I wonder if it is a Summit rpm switch quirk.

 

I Know on some dynos it looked like it didn't open and on the 2 highest dynos i know it did open. I am not sure if it was closing at a certain RPM. I really wasn't paying attention so i don't know if it was closing.
I think because of the AF on the JWT ECU the car was pulling timing in the high RPM because it WAS VERY LEAN. if you look at the dyno graph of the 199whp with the JWT ecu you will see this. The dyno operator explained to me if it gets too lean the car will pull timing to prevent detonation.