Well, I went to the track today - Sunday October 19. The weather was perfect! Cool and sunny almost all day.

I had been complaining ever since I installed my MEVI that my car is slower. I could not get into 14.6 let alone beat my PB of 14.59... not even close. Well, the reason must have been my tranny, because what's changed since the last time I went to the track is a new tranny (with ACT stage 1 clutch and UR flywheel).

Best ET of the day is 14.49... new PB
Best trap speed of the day 97mph... no PB here

I noticed that as my ETs were getting lower, my traps were getting lower too... upto a certain point... hard to explain. I had multiple 14.6 runs and consistently at 14.7 or better.

My slip:

60': 2.241
330': 6.160
1/8: 9.421
1/4: 14.496
MPH: 95.62

I really hope that JWT can send my ECU back this week so I can run it next weekend. But I am now happy with my MEVI... I no longer hate it (not like I did before)

 

Nice! Now fix that sig...

 

What was your 1/8 mile speed?

 

those are some great times. I bet u can't wait for the JWT ECU....

 

This track is weird. If you run in the right lane you do not get a 1/8 MPH but if you run in the left lane you get a 1/8MPH but do not get a 330' time.

That run of mine was in the right lane.

 

You got a 14.59 w/ just a Y-Pipe, B-Pipe, and JWT Cone? (reading that from your sig).

 

Yes, he did.

spd what do you have your mevi set at maybe that would explain the trap speeds.

 

Yeah its very possible...i ran 14.54 with Intake/y-pipe.

good times BTW.

--Paul

 

I dyno tested and came up with 5200RPM switch point as the optimal. That is what it was set at and I calibrated the Harlan switch at the track just to make sure it didn't go stupid.

My best trap of the day was almost 97mph... (I think that was on a 14.7 run with stock tire pressure of 38psi fronts and rear).

 

That's pretty good and you're probably the only person in here that's noted a significant gain with just the MEVI and JWT ECU.

I starting to dislike my car more and more. I ran 14.64@97.7mph with just a y-pipe, intake, B-pipe, and UDP. My best with the MEVI/JWT ECU is 14.45@99.5mph My car is weak sauce. The only thing the MEVI has done for me is add mph in the final 1/8th. The ECU was responsible for my drop into the 14.4s. I'm becoming more and more convinced to yank this thing and get back my 1/4 mile torque with the US-spec manifold.


Dave

 

how much you want for that ECU?

 

If I'm not mistaken I think he wants to get rid of the MEVI not the ECU.

 

I'm keeping the ECU. I'm just debating on whether or not the MEVI is worth it for me. The only time I exceed 85mph is on the track. I'd keep the ECU because it definately works and the 7000rpm limiter is actually ideal for the 1-2 shift with the US-spec manifold. I believe 6900rpms is the ideal shift with the US-spec manifold. Who knows what I'll do. Maybe sell the MEVI/cover/rpm switch/everything and get Cattman's headers.


Dave

 

I don't have a JWT ECU yet. Just MEVI.

 

Yeah, I meant "and not the JWT ECU".


Dave

 

Thats awesome. I just ordered a Budget B-Pipe, Y-Pipe, and a 2k2 SE Muffler. I'm auto though.

 

Try using 5300 or 5400 next time you are at the track and can get in enough runs to compare it to your normal 5200. I bet you see your trap speeds go up a half mph.

 

One of our veteran members, theblue, hit 14.2 with the same mods.

 

Just for reference, what were the trap speeds when he ran that time??

 

Dave. I wonder if you clutch is starting to slip

 

No slippage yet. My track was resurfaced this year and it's actually hooking really good because I can usually get mid to low 2.2 60 foots now. The problem is the surface right where I peak in 1st and then shift to 2nd. Right at the top of 1st and when I grab 2nd, I spin quite a bit. It's not a chirp, it's all out spin. The spin has been so bad that I did think my clutch was going out because the tires barely make any noise (slight squeal) when it happens and there's no hopping or violent vibrations or thuds. I ruled out clutch slippage because:

1) I don't smell burned clutch
2) I can slam 3rd with no slippage
3) I launch and get no slippage.
4) Observers have noted the spin into 2nd and some tire smoke



Dave

 

95.75 mph.............

 

He had full intake (including midpipe) and full catback (including muffler)... I only have the pop charger and stock muffler.

Small differences but could play a factor. Aaron's and my traps are about the same... but he's got a freakish ET for those mods. I don't know what Nealoc had with the same mods, but I bet his were faster.

 

Rudy (VQ driver) hit 14.3x with intake and y pipe. My best with JWT pop and cattman y was 14.41 and best trap 96.7. Then I got the MEVI and JWT ECU so so I never made a pass in the same configuration as theblues. regardless I dont think I could have pulled off a 14.29 but i suppose its possible if I got really lucky and took out some weight. My 14.41s and such back then were done at full weight, not seat removal or CF hood or anything like that. Aaron had something like a 2.11 60' on that run. My best 60' ever on street tires is a bunch of 2.17s so he outlaunched me pretty well.

 

Damn! How do you guys launch to get 2.1x on street tires???

I struggle to get into 2.2x and I have to do a 7 second burnout in the waterbox just for that!!!

If I could get 2.1x I'd love to see what my ETs would turn out to be...

 

I don't pull 60's as low as some of there guys but I have had a 2.1X and usually pull low 2.2's. I never touch the water box, and only do a burn out if I had no choice but to go through the water box. I don't think doing a burnout in the water box on street tires is good, it may actually hurt you.

 

Yep, burnouts on street tires isn't a wise thing to do. Street tires perform better cold, not hot. Drag tires have special rubber compounds that become sticky when a burnout is done. Street tires release oils when you do a burnout.


Dave

 

Hmm I used to go around the waterbox and used to struggle to get into 2.3x. Then I started going a tiny burnout ahead of the waterbox before staging, and I could get into the 2.3x if I had a good launch. But doing a burnout in the waterbox propelled me into the high 2.2x everytime. I have never got low 2.2x... leave alone 2.1x

Next time I go to the track I will try driving through the waterbox instead of burning out or going around the box.

 

My expierence with lowering my 60' has all been in the launch rpm and amont of throttle at take off. Doing burn outs and such never really did anything for me. I tried all sorts of different burout methods and my 60's were always eratic and high. Now I can consistantly pull 2.22-2.23 with just adjusting my rpm's. I suggest finding a different rpm to use than trying to use the water box.

 

I go around the waterbox and just spin the tires a little to get the debris off. I pulled off a 2.25 in the 60' with my auto.