DynoFlash

iTrader: (91)

Shiv, how then do you explain how you are able to do tuning on AWD Dyno Jets on your now famous tuning trips to such Dyno Jet shops as Pruven, Turbo Trixs and Turbo Chargers.com??

Obviously there must have been some useful information gleamed ?

TURBODAWG

iTrader: (54)

I will gladly accept your challenge to Dyno against my road tuned car. I am getting my road tune this weekend in NC.

What are you mods??

I will run you on the dyno as you requested and will challenge you to a real world test in a 3rd gear roll after I have been embarrassed on the Dyno. We can run in a 65 or 70 mph roadway and that way the race will end at 90 mph, that wont be going too fast over the speed limit.

When do you want to do the comparo?? I would prefer to run a 93 octane test if thats okay. That is what my car will be tuned for.

Brian

ShapeGSX

Unbelievable. Why does everything have to end up in a "Challenge" of some sort.

Here's a hint. It is easier to make forward progress when you are actually moving forward instead of butting heads.

TURBODAWG

iTrader: (54)

I didn't mean to turn this into that. I was just accepting his challenge to help to solve this dilemma. It would be a good comparison to see how the road tuned flashed car would compare with an piggy back Xede that was tuned on a dyno. This would be interesting to know..

I didnt post in a derogatory fashion. But I did accept his posted challenge. No hard feelings from my part!!!

Brian

silverEVO8

iTrader: (12)

I'm not questioning your knowledge or expertise David. You've proven your ability countless times so this is not in question. However, I'm not convinced about your statement. As a matter of fact, based on empirical tests I can assure you that not all 4g63's are alike in their tolerance or "liking" certain timing numbers or A/F ratios.
When Al came to Atlanta he "road tuned" my car and found that my car "did not like timing". According to him the factory maps were too aggressive for my car and it was knocking, etc. In the end, my car ended up de-tuned from the road tuned Dynoflash and running considerably richer.
Also, my car is not unique in the respect of the "don't like timing" characteristic. I've read about other cars like that and I've been contacted by other ppl who have had similar experiences.
This would seem to indicate that there are no common AFRs or timing numbers that apply to all EVOs. The other alternative is that the ppl who tuned and diagnosed my car were mistaken........

silverEVO8

iTrader: (12)

I think this would be an interesting test. If there is no contentious or aggressive crap going on, it would be a very nice thing to see. I'll be very interested in coming to Dyno4mance to observe and learn. I'm sure that there are more than one or two ways to tune a car for more power. What would be interesdting to see is an actual measurement of power output under controlled conditions. I say do it!

David Buschur

iTrader: (53)

silverevo8,

I guess what I wrote isn't exactly what I meant as YOU are absolutely right in your response to me.

What I meant was you know BASICALLY what AFR's they like and BASICALLY what timing they like. I rely on the knock sensor a ton to let me know what I am doing when tuning the car. I see as much as 10 degrees difference on two identically set up EVO's in timing across the board sometimes. That is a ton of timing. It does give you basic curve for the timing and AFR's though to start with.

I do agree, a lot of difference in cars though. You just get a good feel for a particular engine when you tune so many.

In this case regardless of what numbers you ended up, 23 degrees of timing or 3 degrees that particular car is going to safely make its maximum HP on that particular octane on a road tune.

David Buschur
www.buschurracing.com

gofaster87

iTrader: (7)

I believe all the well tuned cars coming out of RRE and Scot Gray are both road tuned and dyno tuned. A few of hours of each will do wonders on how the car runs.

DynoFlash

iTrader: (91)

If I recall correctly when we tuned your car, we figured out that the budget "Quick Trip" gas that you were using was fairly knock prone. (determined from Knock Link and stock ecu pulling timing). At the time - not knowing if your engine had some noise issue we used octane booster to quickl raise up the octane a few 1/10ths and immediately the knocking improved. This was a clear indication that the knock was detonation induced and not a engine mechanical problem. (Still it may have been in part triggered by some rough area or burr on the head casting or other minor mechanical "hot spot").

Oddly - your car was so bad it was knocking on the stock maps!

After spending some time adjusting your timing, and a/f curves it was running fairly well - although weaker than most.

On of the principle benefits of custom tuning is identifying conditions such as yours - althout infrequent - and taking steps to work around them. A base tune would have been a diasater on your particular car.

Ironically, immediately after finishing the custom tune - you elected to install a manual boost controller which thereby negated most of the benefits of the custom tune. It may have been better to do the MBC first?

In any event - it was a pleasure to tune an evo of such a enthusiastic and dedicated evo hobiest as yourself

TrinaBabe

iTrader: (3)

I am losing the idea of where this topic is going.... It seems most people use both a dyno and road tune it. I dont think there are any people that are going to pay a ton of cash to have someone tune thier car even though they disagree with the way they are going to tune it. If you want it dyno tuned, get it dyno tuned. If you want it road tuned, road tune it. I personally think on a dyno to start and then on the road to finish it but thats me, everyone is different. Why does everyone need to b1tch at each other over a personal preference?

TrinaBabe

iTrader: (3)

Im curious to know how Curt Brown tunes... I think he did pretty well with his Evo... Not saying it was a safe tune by any means but it made enough power.

4G63>OOOO

iTrader: (1)

Lots of boost, lots of timing, a little race fuel and a lot of fingers crossed.

Crufty Dusty

The main advantage of a dyno is to be able to hold the engine at a steady load/RPM site without having to look out for traffic. Also you'll immediately see the effects of changes to fueling/ignition timing. Especially useful if you don't have a base map.

evotomig

Thanks for stepping up.
Keep us posted of the results if this ever goes thru.

rebelzx

iTrader: (4)

Show me where you see 20 whp left on the table at the top-end on this DynoFlash tuned dyno graph. This is on my car, with all of the mods in my signature.