JoeJErnst

4 Race seasons
176 Runs
Best ever 60’: 1.630
Best ever ¼ mile ET: 11.267
Best ever ¼ mile MPH: 124.51

The following numbers are approximate, but they give a pretty good overall idea of how each set of mods increased performance. All of these runs were at local tracks that are essentially at sea level. The numbers represent, on average, about 850’ DA. My car weighs 4400 lbs race-ready (according to the local weigh-station).

Started with bad I/C pump on street tires:
60’ : 2.3s
¼ Mile E/T: 13.75s
¼ Mile MPH: 108 MPH

Fixed I/C pump on street tires:
60’ : 2.0s (0.3s improvement)
¼ Mile E/T: 12.5s (1.25s improvement)
¼ Mile MPH: 112 MPH (4 MPH improvement)

Added Hoosiers:
60’ : 1.82s (0.18s improvement)
¼ Mile E/T: 12.15s (.35s improvement)
¼ Mile MPH: 114 MPH (2 MPH improvement)

Added LT Headers & PLM H/X:
60’ : 1.80s (0.02s improvement)
¼ Mile E/T: 12.1s (0.05s improvement)
¼ Mile MPH: 115 MPH (1 MPH improvement)

Added 82mm TB, 77mm pulley, RaceIQ ECU & TCU Tunes, looped fuel rail:
60’ : 1.75s (0.05s improvement)
¼ Mile E/T: 11.6s (0.5s improvement)
¼ Mile MPH: 120 MPH (5 MPH improvement)

Added Killer Chiller & Wavetrac:
60’ : 1.67s (0.08s improvement)
¼ Mile E/T: 11.40s (0.2s improvement)
¼ Mile MPH: 123 MPH (3 MPH improvement)

Analysis:

It’s amazing how much power a dead $120 intercooler pump will cost you. Fixing that pump was by far the most hp/$ spent! Even with a good pump, it is very hard to run consistently on street tires. Do yourself a favor and get some drag radials. They dropped my ET’s by .35 seconds, making them the next most cost-effective mod.

Surprisingly, adding the Long Tube headers (with cats) and the PLM Heat Exchanger didn’t provide much of an improvement. I suspect their total potential was not unlocked until the next set of mods, which when combined, dropped my ET’s by over a half-second! That was a very expensive winter, but worth it!

The Killer Chiller has been my favorite mod (besides the Hoosiers). I am actually a little surprised to see that it, along with the Wavetrac, has dropped my ET’s by another two-tenths. In addition, my consistency is WAY better than before. This is a MUST for anyone who wants to bracket race their M113k.

This winter’s mods will include methanol injection, as well as adding a wideband and getting a road-tune from Tony. I hope to be knocking on the door of the 10-second range with the good cold air of early spring in 2018.

mondo

nice. congrats

Dublinoh

I don’t race but that is still very interesting. Seems that many people try to change everything at once and then wonder where the issue is if not up to expectations. Your approach is better. Must have been disappointing when you first put on the headers.

tw2

Thanks for posting, very interesting. It's amazing what the correct tires can do in the right situation. I will gain 300HP equivalent when I change the nasty nangkangs my car came with.

Anthony Lawshee

This is awesome real world results, thanks for taking the time to logging and posting your data.

GM_Lover

Thanks so much for posting this. I'm curious to know if adding meth will actually translate to faster ETs or higher traps at the strip. There are tons of threads about how it keeps IATs super low @ WOT, but not many comments about it making anyone faster.

SMed08

I've got Nankang AR-1's and ran a 1.7s 60ft time on like 32psi. Would not recommend these tires in the winter though lol

JoeJErnst

I actually don't have much data on the headers and H/X because I put them on near the end of the 2015 season, and all of the runs I had with them on were during the hotter part of the summer. As with most mods, you can't draw too many conclusions until you get a lot of data points and I don't have very many on that particular setup.

JoeJErnst

My guess is I will see a drop in 1/4 mile ET by about .08 - .1 s, and maybe 1 to 1.5 MPH increase. This is because even with the KC my IATs get up to 120 by the end of a run. If meth can keep them below 90 for the whole run that should translate into better numbers.

E55amg0220

Just started getting all the stuff together for my meth setup ..... I will be doing one right after the intercooler which is about 6 inches away from the IAT hope itll be good there still trying to decide where I want to put the other one

MBAMG55SL