Bone stock IX goes 12.89
Oct 22, 2005 | 10:17 PM
#211
Almost forgot (should be forgiven as I'm going to be hit by a hurricane on Monday morning), another interesting note given my last line, those using alcohol injection should figure out stoich for the mixture of say 93 pump plus alcohol or meth injection and tune from there if your UEGO doesn't read in lambda (most do). This could be really critical if you're on the ragged edge and don't have a good buffer by running overly rich. It could also provide you with the knowledge to seriously increase your current hp levels. While I'm reasonably comfortable tuning to 8/10th's, I let the big boys tune for those extra two tenths. I've learned the hard way more than once. My advice to anyone taking this little bit of knowledge is to use it as a starting point but, in the end, let a pro do the tuning.
Originally Posted by Mr. Stock
Not to be too rude, but if you have no knowledge in the field, how is it that you're able to question? Shouldn't you in fact do some research on your own first? A simple call to say, VP would probably answer all your questions. Stoich in fact can be quite different due to formulation. Any of the race gas "manufacturers" will provide you with specific gravity and stoich point for their "brew". No technical knowledge is needed. It's well known and documented information but info that's not readily known by the weekend warrior. Simply do a search on Google and you'll likely come up with the information you are looking for. I used to have a list of stoich values for different fuels, I'll see if I can dig it up and post for a reference to others on this forum. My background in the recent future has been with turbocharged rotaries. If you know a thing or two specifically about pressurized rotary engines, you'll understand my need to know stoich values for various fuels 
Off the top of my head, stoich for something like Alcohol is 9.6:1, just to give you an idea.
Off the top of my head, stoich for something like Alcohol is 9.6:1, just to give you an idea.
Oct 22, 2005 | 11:11 PM
#212
Holy crap! I checked this post out yesterday in its infancy and now it's gone and blown up.
I will share what I've seen so far, being that I'm in AZ and have run at Firebird & Speed World (I think he said this sweet time was done at Firebird, no?)
I have seen three (yes, t-h-r-e-e) stock 05 Evos run mid 14's. All three were driven by different drivers and at different times over the last few months. These were all done at Firebird. Karash's new 05 was the last one I saw and he was in the mid 14's just like the others.
What you people don't realize is that it's hotter than h3ll out here and times are usually horrible because of this. Moreover, Firebird isn't known for fast times to begin with. Most of the people that run at both Speed World and Firebird run about .5 seconds slower on average at the latter.
In addition to the heat, we are unfortunately only able to get 91 pump gas. NINETY ONE. The owner’s manual calls for 93 octane!! Therefore, the stock tune is being retarded right after you turn the key.
There are only a handful of spots in the whole valley to get hi-octane fuel. Mobil on Chandler Blvd, the 76 station at Pavilions, & Falcon Field (aviation fuel) are the only places to get it at the pump that I know of.
In summary, the IX truly sounds like a bad @ss. Breaking off 12's in stock form is great. A lot of it most likely is due to the driver's skill. Some if has to do with the cooler night time temps we're finally getting. And finally, some of it has to do with the stock tuning getting enough octane to do what it’s designed for.
*side note: I also saw Karash slap some engine management onto the car after 2-3 runs and he improved by an entire second! NICE BROTHA!!
I will share what I've seen so far, being that I'm in AZ and have run at Firebird & Speed World (I think he said this sweet time was done at Firebird, no?)
I have seen three (yes, t-h-r-e-e) stock 05 Evos run mid 14's. All three were driven by different drivers and at different times over the last few months. These were all done at Firebird. Karash's new 05 was the last one I saw and he was in the mid 14's just like the others.
What you people don't realize is that it's hotter than h3ll out here and times are usually horrible because of this. Moreover, Firebird isn't known for fast times to begin with. Most of the people that run at both Speed World and Firebird run about .5 seconds slower on average at the latter.
In addition to the heat, we are unfortunately only able to get 91 pump gas. NINETY ONE. The owner’s manual calls for 93 octane!! Therefore, the stock tune is being retarded right after you turn the key.
There are only a handful of spots in the whole valley to get hi-octane fuel. Mobil on Chandler Blvd, the 76 station at Pavilions, & Falcon Field (aviation fuel) are the only places to get it at the pump that I know of.
In summary, the IX truly sounds like a bad @ss. Breaking off 12's in stock form is great. A lot of it most likely is due to the driver's skill. Some if has to do with the cooler night time temps we're finally getting. And finally, some of it has to do with the stock tuning getting enough octane to do what it’s designed for.
*side note: I also saw Karash slap some engine management onto the car after 2-3 runs and he improved by an entire second! NICE BROTHA!!
Oct 23, 2005 | 02:25 PM
#215
Originally Posted by TrinaBabe
The other thing about the race gas. The way ECU's work simply put, is they attempt to achieve the highest possible timing and AFR without detonation. They have many many maps that they will continue to advance to until it senses detonation, it will then stop and pull it back slightly. Thats the FIRST part of the race gas idea. The other part is about the actual fuel's themselves. Take the specific gravity of C-16 vs. pump 93 octane. They are not even close, therefore, the C-16 will burn MUCH richer, forcing the ECU to pull more and more fuel out to make the AFR's close. Granted, to take full effect of the fuel you would need to lean it out much more than the ECU will and raise the boost higher, etc... but you will see a gain in performance regardless. In fact, the stock ECU would accept high octane fuels MUCH better than a static tune (Utec) would because the stock ECU will constantly try to get the AFR's 'right' and timing 'right' where as some ECUs wont (Utec).
...as far as the Evo ECU goes, you are wrong on several counts:
- The Evo VIII ECU does not have "many, many" maps, AFAIK, it has two (regular operation, and a "pulled timing" map for when it senses knock activity). The Evo IX ECU might have an extra one for MIVEC, but I doubt it. Precision has already stated that it's pretty much just as primitive as the VIII ECU.
- The Evo ECU cannot determine AFR ... it has NO wideband O2 sensor to do so.
If the stock ECU was as good as you described, then there would be no need to go with aftermarket engine management.
Asta4125, pls accept my apologies for the haters and doubters. If I was in your shoes, I'd simply ignore Quarralton and Co. There's a lot of good info on these boards (along with the bad) and it'd be a shame to have you alienated by a few h8rz.
l8r)
Oct 23, 2005 | 02:40 PM
#216
Originally Posted by KINGEVO7
the o5 is still 10hp less stock and a slightly smaller turbo.
Anyways...
The torque and power curves of the IX are nice and broad from 5000 rpms on up.
The MIVEC and larger turbo are most likely responsible for that.
Impressive.
http://www.hksusa.com/images_products/2878.jpg
.
.
Last edited by Spec'd; Oct 23, 2005 at 02:45 PM.
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