Originally Posted by m05fastbackGT

Couldn't you just had Brenspeed send you a revised tune file with the air/fuel and timing corrections

Originally Posted by 2k7gtcs

I definitely could have. But I was 2 hours away and already on the dyno and had the idea that I needed a custom dyno tune. I was already in it up to my knees so I figured what the hell lets dive all the way in.

Originally Posted by m05fastbackGT

Then take up your issues with JDM engineering, as I was strictly going by their description.. If you believe their misleading customers, then confront them about it.. It's just as plain and simple as that !!

So what's next, that Ford's stock calibrations are also canned tunes just because they're not developed on each individual car one at a time

Originally Posted by m05fastbackGT

All I know is since I've been running the Brenspeed e-mail tune, I haven't ran across any problem related issues.. Also as I previously mentioned I had the tune put on the dyno to be tested, as I wanted to make 100% certain that it was safe.. The shop verified that my air/fuel, spark and timing curves were fine and that no adjustments were necessary.. When I asked the shop for their opinion if my car would benefit more by having them custom tune it on their dyno, I was told the Brenspeed tune is a very good tune for an e-mail calibration and the best they could possibly get for me is maybe up to 10 more RWHP.. Needless to say, they said if and when I'm ready to do future upgrades such as LT headers, cams, high-flow heads and increase my boost levels, only then would they recommend upgrading to having my car custom dyno tuned..
Until then, they said just stick with what I currently have.. However after reading over these posts, I may end up reconsidering my position by seeking a second opinion from a different tuning shop

Originally Posted by m05fastbackGT

As for a good dyno tune being a must for forced induction applications is concerned, that's not necessarily accurate.. It all depends on the who the tuner is and how much experience they have in writing custom e-mail tunes for FI.. JDM engineering and Brenspeed write custom e-mail tunes for FI based from years of experience in R&D testing on their test mules and also from writing hundreds of custom dyno tunes for customer cars as well.. Needless to say, it's now been nearly 2 years since running my custom e-mail tune from Brenspeed and everything has been spot on.. I also had the Brenspeed tune verified on the dyno by a local tuner who was very impressed by the tune and said that if I were to have my car custom dyno tuned, the most he could get for me would be just 5-10 additional RWHP..

Another option would be submitting a data log file of your car's parameters to the tuning shop who then writes your tune based off the log file you provided and if necessary, would make any adjustments to the tuning file that may be required.. That being said, unless your looking to squeeze every ounce of RWHP your car is capable of, there are other options available that provide safe and reliable tunes for FI which are nearly just as good as a custom dyno tune for less $$$..

Originally Posted by 1 Alibi 2

.
A custom tune is developed on your car:
The tuner drives the car.
The tuner data-logs the car.
When he's happy with what he has on the street, the tuner puts it on the dyno.
..........Both of my cars run custom tunes by JDM.
.
If you can order a tune by phone or e-mail, it's canned. They use file tunes & adjust them to suit your mods / needs, call it custom !!!
JDM has made tunes based on my custom tunes, it's the way the business is.
....................this pic is @ JDM, dropping off the 11, picking up the 14
.

.

Originally Posted by m05fastbackGT

And JDM also writes custom e-mail tunes based upon countless R&D sessions from their own test mule vehicles before ever releasing them to the public.. There are however some vendors that are in the business who market false claims by making all kinds of empty promises that if you purchase their generic one size fits all tunes, your car will make the highest HP/Torque gains..

So therefore I do not compare JDM's custom e-mail tunes with those certain other vendors who just simply use some generic file tune and then adjust it in order to fit the end user's needs, as I just don't buy into that at all.. As I mentioned in a previous post, I had my Brenspeed e-mail tune verified on a dyno by a local tuning shop that not only confirmed the tune was safe, but I'd also end up having very little to gain if I were to upgrade in having my car custom tuned on their dyno as well.. That pretty much says it all in itself as far as I'm concerned..

Originally Posted by m05fastbackGT

Being as your a JDM customer who's had their car custom dyno tuned by them.. Why don't you ask Jim JR or better yet confront Jim Sr himself about providing fictional info on their website in regards to their custom e-mail tunes as being nothing more than canned tunes and have them set the record straight once and for all lol.. As for your proprietary/intellectual property claims are concerned, as usual you haven't provided a single fact to back up any of your speculation claims since you began posting on the OP's thread.. For once the customer purchases the S/C kit from Roush, Saleen or from Steeda the kits become the property of the customer..
Only the ECM calibrations themselves are owned by the manufacturer.. And FYI: the reason Saleen and some of the other manufacturers do not include hand held programmers with their S/C kits is due to the manufacturers warranty policy..

And now you have the d@mn nerve to claim that my dyno sheet doesn't provide proof that it's my file that I had verified.. So just who's file do you think it is, somebody else's file that was just randomly picked out of a hat Well if you think I would lower my standards just to going through all the trouble and hassle of stealing somebody else's dyno sheets knowing full well that people would eventually catch on anyhow, then your obviously really out of your freaking mind or just another of your desperate failed attempts towards discrediting my posts

The bottom line is.. I provided proof of the tuning shop in which I took my car to have my custom e-mail tune verified and I also provided proof from JDM's own website that verified their description in regarding their custom e-mail tunes as not being canned tunes.. Therefore I have nothing to gain nor have any purpose for attempting to mislead anybody for any reason whatsoever.. As for being disappointed with my tune is concerned, on the contrary.. What I care about is that my air/fuel, timing and spark parameters are exactly where their supposed to be and if you took the time in enlarging the dyno sheet I provided, you'd notice on the bottom portion what my air/fuel ratio is.. Personally IMHO 432 RWHP for a street driven car is more than enough for my purposes in which just another 5 maybe 10 more HP just isn't worth justifying the cost towards paying an additional $550-$700 for having my car custom tuned on a dyno.. That being said, until you can back up your speculation claims with actual documented proof that JDM engineering has been misleading folks over the description of their custom e-mail tunes.. I personally don't give a rat's @ss what you choose or choose not to believe as far as I'm concerned

Originally Posted by 2k7gtcs

I think it's either a matter of the tune or the salesman.

Maybe my guy felt like he wanted me to pay for the dyno tune. Maybe your guy was honest and didn't. Maybe they were both right. Maybe they were both wrong. Who knows? But right now I'm happy and when this thread started you were happy. Maybe ignorance, on either of our part, really is bliss.

Originally Posted by FromZto5

Yes, you guys are both right.

I am also a JDM customer (as I've stated in many of my other threads in the past), and have been running their custom tune for 3 years now.

My car is FI'd, and it has never been dyno tuned. It's been on a dyno to the tune of 600whp, but never tuned ON the dyno.

The tune came courtesy of JDM - first they had me datalog using the "canned" tune from Magnuson that came with the kit. I sent them the datalog results (idle, cruise, accel, etc.), then they sent me their new tune, and had me re-datalog. We repeated that process a couple of times, until Jim Sr. was comfortable with ALL the data.

I then added a few more mods (smaller pulley, bigger intake, LTH, etc...) to the car after a few months/year, so then JDM (after having my car's "info" already) knew what to do to tweak the existing tune. The datalog process and repeated to validate the tune for safety and power, then voila.

So like I said, I've had the tune now for almost 3 years. JDM has a customer for life, at least for me.

Originally Posted by tourer

WOW! Hot Button topic I guess. You all gave good advice, I'm sorry if it kind of went sideways, at the end of the day, were still all gearheads, lets revel in that fact.

Originally Posted by m05fastbackGT

Burton, just keep in mind there's a difference between a custom e-mail tune over a custom remote tune (via) data logging.. A custom e-mail tune is developed from either a single test mule vehicle or perhaps from multiple test mules.. Once JDM and Brenspeed determine the tunes have been perfected and considered as safe, only then will they get released to the public for sale..

Your custom remote tune on the other hand, is a tune developed from a data log file taken from your car's individual parameters including air/fuel, spark and timing tables and so forth..
Once the tuning specialist examines and then determines what adjustments are required, he'll then write the new tuning file based off the revised adjustments.. You'll then proceed to have the revised tune file checked on the dyno, if everything checks out ok, then there is no need to e-mail the file back to the tuning specialist for additional tweaking, but if not, then it's like you said, the data logging process continues until everything has been verified.. At any rate, you might just as well consider a custom remote data log tune as a custom dyno tune, without your car physically being on the dyno..

Originally Posted by FromZto5

Yep you are spot on, Rocky. That's exactly my situation. No dyno tuning for me, but rather 3 street tune sessions, so to speak.