Jordan... cams and tuning (split from other post)

[RobbieNelson]

Oh yeh and for you guys who do the 1/8th mile (which I prolly will later this year) my time was a 8.2 @ 86mph...so hopefully with some better octane gas I will dip into the 7's...

Without some kind of "tune" or engine management, higher octane(higher than 93) won't get you anything but empty pockets. Higher octane will allow you to run a little more boost and more agressive timing and fueling, but with the stock ECU it won't get you a thing.

[Davis Silver Sti]

Jordan.....echo'ing what Robbie lead to, EM is the way to go. You already have a bunch of stuff, the EM will now make it safe and mroe controllable while providing more power.

IMHO, I would be a bit apprehensive doing much engine/exhaust work without doing EM first. (STi's have a pretty picky computer)

[Feedman]

My thoughts exactly on the engine manegment.

Tuning is key, he has alot of power there left untapped b/c of a/f and timing........

I gurantee he could pick up anywhere from 50-100 hp from a solid tune and be safe....

8)

[BLUEVOVIII]

I have kept tuning the car on the back burner untill I have my fill of other modifications...The last thing that I would like to do before I have it tuned is put in some aftermarket HKS or GSC cams...then have it tuned...

I think right now I have done most of the major bolt-on upgrades...so just cams, tuning, then I'll get into suspension and sticky tire :D Also I want to do some little things, such as update the looks on the interior and exterior a little...Neway I was happy with 12.9 but im still looking for lower!

[Davis Silver Sti]

Good good. Just be careful in how hard or how much boost you are going without the EM.

[RobbieNelson]

I gurantee he could pick up anywhere from 50-100 hp from a solid tune and be safe....

I think 100hp is optimistic even if you meant at the crank. I would say 15-30 at the wheels. Plus, it would most likely give a bigger "area under the curve."

Jordan, visit this link! http://forums.evolutionm.net/showthread.php?t=134207

[Feedman]

I gurantee he could pick up anywhere from 50-100 hp from a solid tune and be safe....

I think 100hp is optimistic even if you meant at the crank. I would say 15-30 at the wheels. Plus, it would most likely give a bigger "area under the curve."

Jordan, visit this link! http://forums.evolutionm.net/showthread.php?t=134207

I don't think so. I gained 20 some whp on my tune on a smaller engine and smaller turbo.

Evo's run rich. There is alot of power to be made, remember I said this, b/c when he gets it tuned, you will see...

8)

[BLUEVOVIII]

I visited the link and posted up..basically saying I would be interested...I just need that #$%# tax return to come in!! neway, I really am going to need to invest in a rim and tire package soon, b/c my tires only have about another month of wear left on them max!! So my money will probably be towards that instead of cams and tuning...but we will see how that money situation works out...

the reason for me considering cams is....this could get long :lol:

Here are the mods for a guy who just got cams and a RS intake (which I already have that exact intake)

"I installed my HKS RS intake, and GSC 264in/272ex cams last night along with ARP headstuds.

My current mods are now:
GSC 264in/272ex
HKS RS intake
ARP Headstuds
Hallman MBC
Walrbo 255lph
UR high flow cat
RSR 3" exhaust
HKS downpipe
Greddy Type S
ACT Street Clutch"

Ok now after looking at all those mods, all he has different from me is the fuel pump, and I have the IC piping and the upgraded intercooler, not to mention I dont have a cat at all but a straight pipe...Ok now with all that in mind he had his car dyno at 286 hp and 313 torque Those numbers are BEFORE the intake and the cams...Basically he says that the cams pull so much harder up top...which they should...

The first graph is with his Cams and Intake installed w/NO tune....

The second graph is them leaning the car out to a a/f of around 11.9 max...

Soooo if you look, he goes from essentially my mods (minus a couple little things) of 286hp and he then installs the cams and intake and then the hp goes to 305 then he gets it tuned and it jumps to 343hp sooo....If I can get to 350hp on pump gas, then that will probably be fine with me 8)

[RobbieNelson]

38whp gain with cams. That's a lot closer to my estimate than Adams. 8) I think the gain from a tune would be a little less without cams.

BTW.... I think comparing your car getting a tune to Jordans is an apples to oranges kinda thing. Your car wasn't turbocharged from the factory so I think you had more to gain.

BTW2.... Adam, I'm not saying "na na na na boo boo" or "liar liar pants on fire"... I'm just offering constructive critisizm, but I'm sure you already know that. Feel free to interject/comment/disagree.

[Feedman]

38whp gain with cams. That's a lot closer to my estimate than Adams. 8) I think the gain from a tune would be a little less without cams.

BTW.... I think comparing your car getting a tune to Jordans is an apples to oranges kinda thing. Your car wasn't turbocharged from the factory so I think you had more to gain.

BTW2.... Adam, I'm not saying "na na na na boo boo" or "liar liar pants on fire"... I'm just offering constructive critisizm, but I'm sure you already know that. Feel free to interject/comment/disagree.


Good point, I did have more to gain, but I also strongly believe that Jordan has alot to gain also.

Here is my reasoning.....many cars come undertuned from the factory, ie emmisions, cost to produce, etc. We all know and see it everyday....

Intakes on mustangs can net 20whp....

Evo's are tuned very rich...with alot of timing pulled...

Correct this and there are significant gains to be seen.

I would put money down that he could see anywhere between 30-50 hp....with his mods now.

Boost controller/intake/exhuast setup..

8)

[Davis Silver Sti]

I was pretty happy with a gain of +50 (crank) hp and +85tq. with EM and exhaust. So the EVO shouldn't have much problems getting more hp and tq.
Agree, that unleashing the EM to a proper tune will help alot.

FYI: sometimes/manytimes a CAI will not improve any performance...."sounds cool" (8 cycl. however would get more benfit from a CAI)
Also be careful that the boost controller doesn't mess up the EM tuned settings or that it is flexible with the new tune. Just stuff to think about.

[ShortysTRM]

That's with just EM and a downpipe. If you had full exhaust, I'm going to guess you could pull out another 30 hp with the GP moto equal legnth 4-2-1 headers w/ built-in uppipe and your cat-back that's coming. You could cut cost (and HP gains) and get the Borla headers...it would still sound like a Suby, too.

There are some amazing videos out there of what tuning can do. Go to http://www.centralfloridaturbo.com and go watch their videos. They're all absolutely worth downloading.

For some good examples of what a properly built and tuned Evo VIII can do on a long, straight racetrack that looks a whole lot like an interstate check these videos out. Also definitely worth the download. Both are pretty small. (these vids were on srvids.com, but that site isn't working today so I had to re-host them)

http://www.atabo.com/chrisevo.wmv
http://www.atabo.com/chrisevocobras.wmv[/url]

[Feedman]

For some good examples of what a properly built and tuned Evo VIII can do on a long, straight racetrack that looks a whole lot like an interstate check these videos out.

http://www.atabo.com/chrisevo.wmv
http://www.atabo.com/chrisevocobras.wmv[/url]

Best evAr......lol..

8)

[ShortysTRM]

Rolling start drag strips are the new it...