Originally Posted by
Charles.waite
JHM has stated many times why they don't post dyno numbers. THey post 1/4 mile times (which IMO are more representative of the power the tune creates).
This subject has been beated to death by JHM haters and supporters so many times here on AZ its really not worth going into.
When I (finally) tune my B7 I'm going with JHM. The flashing situation is a bit tedious with them (buy a cable for a lot of money or try to find someone local to rent it from) however the tune is excellent.
Correct.. The reasoning behind JHM not posting Dyno numbers has been beaten to death, buried, dug up and beaten more and buried over and over.
For the record JHM chooses to give you video record and 1/4 mile times for our products instead of Dyno numbers. You ask why, the answer is simple. A Dyno realistically is only useful when comparing your car to your car and no other individual’s cars on other Dynos. There are too many variables that affect a Dyno numbers and cause you to either make more or less than the next person or advertised. Anything can affect the number, Dyno type, tire pressure, the position of the tire on the rollers, Dyno calibration, weather, what gear you are in, the list goes on.
The 1/4 mile is really a fantastic test and proof of performance. We have been going to the track to prove performance for the last 8-10 years with our cars. You have now started to see a lot of other companies do the same in the recent years as well.
That being said, you will sometimes hear the argument that JHM has professional drivers, the cars aren't the same yadda yadda yadda. The simple fact is you have the ability to do EXACTLY what I have done to my Avant if you want. Every part on my B7 is available with the simple click of a button or phone call to me at JHM. Having a professional or novice driver in a car doesn't take away from that cars ability to go fast. It doesn't mean the machine isn't still capable of replicating the previous pass, it just means the driver didn't have enough ability to drive the car to its potential. I am definitely not a professional driver. I have just put the time in to become very connected to my car. Only seat time and trial and error can build that connection. I can honestly say that between my Blue Avant(RIP) that went 12.5 and my White Avant I have over 350 track passes under my belt. I put the time in to learn about my car, how to launch the car and how to use the cars full potential. My first track pass in my entire life was in 2013 with my avant. It just takes practice!
Originally Posted by
pezgoon
I'm curious to know how "unsafe" jhm's tune is
Meaning, how much does it affect longevity. There seem to be quite a few people with 100k+ on there tunes without any major issues. One person I know has 250k on their car and it's been tuned for 180k and it still has the original clutch (this was in a thread about clutch longevity) and I'm pretty sure it was jhm but maybe not
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I bought my Blue Avant with 74K on it. When it was totaled it had 132,xxx on the clock and my White Avant had 84k when bought and now has 98K. The Blue Avant was a development car just like Jake's Black Sedan and went through everything from basic Stage 1-2 tuning and testing all the way to the JHM TD05H-R Big Turbo Kit. I didn’t break a single thing on either car as a result. Sure, things like spark plugs and a failed DV or outdated PCV may have needed to be replaced due to age but nothing other than the maintenance as the car requires and that is it. Obviously as we upped the power of the car we exceeded the ability of items like the stock clutch but that is to be expected when building a car for performance.
Originally Posted by
canadianA4B7
I think if you support the tune with proper hardware there's less "unsafe" to worry about.
I would never run stage 2 on oem rods, or any turbo upgrade, as well I'd never upgrade power parts without upgrading clutches. I have bent rods, and blown clutch all on oem engine and tune. To each their own but adding power with support will usually result in opening the wallet more often.
Your situation has and will continue to confuse me. I have no idea how you bend a rod on a stock calibrated car with no mods. If the rods were really that weak Jake and I both would have done our motors in a long time ago.... Not only is my car a fully equipped BT car on a 100% stock motor, I regularly spin my motor out to and sometimes past 7500 rpms.
Originally Posted by
Ashtonts
With JHM posting 12.1 second quarter times on a completely stock motor, I would never worry about running a simple stage 2 on stock rods. I probably wouldn't even worry about it on a K04-sized turbo either, unless I was trying to get serious power out of it. As far as I know bending rods on a stock turbo is extremely rare; you should not run into that problem with an OTS tune
JHM Stage 1, 2, K04-R and TD05H-R are all safe for your stock motor!
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