Well, sorry, but there's just no way you went from 330-340whp to 380whp with a few minor changes while still on the stock turbo and pump gas. It just doesn't happen.

Oh, and as for going to the same track. The track where I got the faulty trap speeds is a track that I've been to over 15 times without it ever happening before. Since I know the track so well and no my car so well, I knew the trap speeds were off by at least 2mph. Before my 115.7mph trap, I had never run faster than 113.2mph, and I was running the exact same times through each portion of the timeslip. There's no way to run the exact same 60', 330', 660', 1000', and 1320' yet have an extra 2.5mph. I knew it was bogus, so I didn't claim it. Also remember that you're claiming huge MPH now and still slower ETs than my much slower Evo. I know you had some issues, but the numbers don't add up.

 

Great job Drifto!!

 

I am here to vouch that everything he says is true. I'm witness to it.

None of us were getting decent 60' times. The best I could muster out there was a 1.8, and that's with all four tires spinning. With 3/4 tank of fuel and a 5 gal can of methanol in the trunk, the best I was able to do was a 12.0 at 117.

Drifto ran a virtually identical time slip, almost same ET, same mph, same 60'. He managed it with pump fuel.

For starters, he's running 21 psi. He's making good power on 21psi. I don't know why that much is difficult to believe, as I'm running 21psi as well. I'm talking 21psi around the power peak. After all, you don't get a chance to use big midrange torque numbers (high boost on a factory turbo) in a 1/4 mile race. Furthermore, this 6-bladed 20G wheel on my car isn't making as much torque as my TME did, but I don't think it's very consequential in a drag race, with rpms staying above 5k for most of the trip.

In short, Drifto's setup is working very well on his car. He has a big IC, an efficient exhaust system, capable cams, a larger hotside, and he's done a very good job of tuning it to get more power out of the Dynoflash. He drove it as well as anyone that day, and it generated some nice numbers.

Next time, I'll be sure to show up with the reserve light flashing, a scrub to watch my methanol can, and hopefully with a turbo upgrade.

 

+1 Amazing runs!!!!

 

drifto don't listen to these guys. Good times!

 

I was faster at every point that you mentioned. I was 2-3mph faster through the 1/8th than I've ever been as well. My speedo showed almost 5mph more through the traps than before. I am claiming NO hp#'s. Your quicker than me because you speed shift. I figure that the little tweaks that I did on the DTEC must have moved me into a different timing cell and the result was more timing on top. I will have to check it to confirm. Max timing before was 9 at boost onset ramping to 17deg at 7.5k.
I know that when I made the change on the DTEC I immediately noticed it. So much infact that I let a friend of mine drive the car and he commented on the torque steer from a second gear roll and how it seemed like a different car. I took it out the other night when it was 40 deg and it was lighting the tires up from a first gear roll. I can't explain it ,but it makes more power than before. It would never have done this before these last mods.
I find it funny how when someone dynos a high number War, you always discredit the dyno and say take it to the track. Well I went to the track and now you want to discredit that. There were several locals there running the same mile an hour as before. Why would the timing station mess up only on me ?

 

Drifto posted:

"... and picked up 4mph..."

Then for some unknown reason, matt55 posts the following:

"I would love to know the "tiny changes" you did to gain 40hp."

And to add to more confusion, Warrtalon adds this:

"Well, sorry, but there's just no way you went from 330-340whp to 380whp with a few minor changes while still on the stock turbo and pump gas.
It just doesn't happen..."

Did I miss something here, or is there some other thread happening in parallel?

 

Ivan, the correlation is 1mph = 10whp. It's pretty basic/standard on the Evo with the stock turbo.

 

Drifto, yes, I prefer people to prove it at the track. However, you don't just randomly gain 40whp with no change in boost and no change in octane. There's no reason for you to be able to make 380whp at nearly stock boost levels. You would be the only Evo in history to make that much power on pump gas. It doesn't add up.

 

Awesome job Walker, your car is a freakin animal! I bet its even more pleasing for you as you built most of the major mods on your car yourself

 

We can dissect this further if that proves to be helpful. After all, we know the results, so we just need to work our way backwards. 370+whp (DJ) on pump has been demonstrated before by another, so we know it's been done. It isn't a matter of 'if', but 'how'.

For starters, I'm right at 350whp on a DD, which works out to a little over 400whp on a DJ. A comparison of the weight between our cars (Drifto's and mine) as per my estiimation would show my racing weight to be ~100-120lbs heavier, not including the fact that his car has lightweight 3-piece wheels FWIW. Whatever difference that is works out to be the equalizer between our two performances, which are virtually identical.

- Drifto's exhaust consists of a very efficient tubular manifold, O2, and TBE. My setup is identical, but I'm using a different tubular manifold. Obviously, a stock exhaust manifold and factory O2 won't perform as well.

- His IC is virtually the same piece as the BR Race unit, which is proven to be very efficient at IAT reduction - a significant issue when pushing a small turbo such as a 16G in the upper rpm ranges. Nominal IAT differences directly affect the ignition advance the engine will accept, which can make for significant differences in power. Mine is the Nisei, which is comparable. Virtually everything else on the market appears to be somewhat less efficient.

- My turbo is actually not as good as his. This 6-bladed unit I'm running has proven on the dyno to be less efficient than my TME psi for psi. As a result, I could not achieve his power levels if on pump, and I can't take advantage of the additional cam timing.

- As far as the little changes he's made in the tuning, let's just say that he gave it the necessary attention to get the most out of it. Little changes, especially in the timing map, can make big differences. I seriously doubt he'd be able to get anything else out of it, but if that's the case, he's done the job.

The rest of his setup is standard fare for cars in that power region.

So, I'm heavier and running the same times/traps, but I need methanol to do it (which increases my power by about 10%). Being that I have recent dyno results that show what I'm generating, he certainly seems to be in the 370whp (DJ) range.

Just food for thought.

 

Check out this dude. https://www.evolutionm.net/forums/members/26514-soon2bevo.html

If you change timing, power will go up. By removing fuel with the DTEC it raises timing. It is also documented the changing out the stock turbo inlet makes power if the tune is correct. I believe your buddy Dave Buschur dynoed around 12-14whp by replacing the stock inlet pipe with his hard pipe over a car that already wore his open element filter, which is exactly what I did. Also my AFRs were in the 10.4 range with the dynoflash on the street . The -.5% I pulled out of the fuel curve was enough to change AFRs one full point. This would add power as well.

 

I am sorry if I sound stupid, but aren't we oversimplifying the rules of physics here a bit. Nevermind that even factory stock cars have different hp/torque/weight. But now we add to the mix mods, that might have changed the car's air friction coefficient, tires that changed the car's rolling resistance, plus each track enviromental conditions change daily. I could go on and on about different forces that act on the car, but I will even add driver ability, because, let's face it, even if all he was doing was pressing on the pedal, you still have to press on it so much.
Keeping all of that in mind you can't say that 1mph equals 10hp, by your "standard" I have to apply 650whp just to go 65mph on the highway!

 

There I fixed it..... 10 lbs = 1 hp also in this hp/weight range and et/time range

 

Whatever, Ivan, we're just speaking from experience, and we're only saying these numbers in general. We obviously don't know the exact gain, but your diatribe was unnecessary. I was saying a 1mph gain is equivalent to a 10whp gain in these circumstances.

Drifto, you still aren't getting it. We make more power from more boost. Yes, we also get it from more timing, too, but you don't gain that much power from just a little bit more timing. And no, you didn't gain a lot of power from just adding a SAMCO hose to your intake. Come on now...

Think about it. 380whp on pump gas with almost stock boost. It doesn't make sense and no other Evo has made that much power with those conditions. You also didn't do any special driving that pulled out extra power. If anything, your sub-par driving hurt the MPH.