2007 Stage 2 Methanol Sti- A few pulls and launches

2007 Sti
Cobb Access Port (Pro-Tuned)
Cobb Catted Downpipe
APS 70mm Cold Air Intake
Walbro 255Lph FP
Prodrive 3 Port Boost Solenoid
3" Magnaflow Exhaust (with the stock tip)
Aqua Mist HFS-5 (with Spec-c Tank)
Cobb Light Weight Pulleys
Cobb Short Throw Shifter
Cobb Shifter Bushings
TiC Klunk Killer - Comfort
Tuned on 50/50 Water Methanol
Launch Control and flat Foot Shifting

Category:

Autos & Vehicles

Tags:

• 2007
• sti
• wrx
• hbspeed
• stage
• methanol
• meth
• alchy
• water
• injection
• dyno
• pulls
• magnaflow
• launch
• control

[Srirachaa]

@tredts I fully agree with all of that. Either way they are great cars an can take much more abuse than most. I did read an article a while back stating STi engines were tested to 9k and that was the point that things can start to happen. So yes, you can be in the 7's. I personally wouldn't make a consistent habit of it.

[Srirachaa]

@tredts Was never referring to the drivetrain, specially the bulletproof tranny. Don't have to worry about that until at least 500-600awhp. Talking about the engine itself. I agree it isn't going to blow at 7 or 7.5 or even 8k. But, over time with repeated use in that range, you may notice little things like: more oil consumed than normal, loss of engine performance, many other little things, or you may not. Basically, your car becomes an experiment.

[tredts]

@Srirachaa I wouldn't even drive an sti on CA 91 octain period. When running on methanol the timing I run is just nuts, alot of doors open up with better fuel.

[tredts]

@Srirachaa my rev limiter is set at 7700 rpm, my flatfoot shift is set at 7400 rpm. Set by my tuner who absolutely insisted on setting it there, BECAUSE sti drive train can and will handle it. I don't know why everyone thinks 7000 rpm is So high, the stock block can easily handle 8000 easy.. especially with race fuel or methanol rated octain.

[Srirachaa]

@tredts Gotta role with facts, what's the point of wrong examples? It is close, but less wear an tear with lower rpm's. I don't do any racing with cars at all, but I do with sportbikes, and little shit like that is important for the longevity of yo shit. All those guys will tell ya the same thing, redlining is only on accident, and hitting the limiter means you really fucked up. Y everyone does it, I don't know. Maybe hollywood put it in their heads with all these stupid movies.

[tredts]

@Srirachaa I was just throwing an example out there, you went and busted out the ratio calculator lol.... I redline every time I race, I can't even imagine shifting a second early. It would be so close in a race shifted at 6k and 7k rpm even in The same car but either way, the drive train is built for it and I'm hitting red!

[Srirachaa]

@tredts Now, the gear ratios. Stock STi 2004 an up gear ratios- 1st- 3.63 2nd-2.38 3rd-1.76 4th-1.34, 5th-.97 an 6th-.76(this is what I used for my calculations) So let's say we shift at 7k vs 6k. 1st to 2nd@6k becomes 3.9k, @7k becomes 4.5k. Assume 2nd to 3rd- 6k becomes 4.4k, 7k becomes 5.1k. Assume 3rd to 4th- 6k becomes 4.6k 7k becomes 5.4k. Those are facts. I saved you the trouble of looking them up, unless you don't believe me. Calculations were done on a standard gear ratio calculator.

[Srirachaa]

@tredts I hear you and more than understand what your saying. With that said, you and I both know that the gear ratios on an STi are very close, an to say you drop 2500rpm from first to second at 5500 is incorrect. And becomes less from 2nd to 3rd, and even less from 3rd to 4th. I'll break that down in my next post, but first lets get the facts. Peak torque on a stock STi is at 4500 rpm, peak HP is at 5300 rpm. Don't know your exact tune but on my stage 2, peak torque is 3400 an HP is 5400.

[tredts]

@Srirachaa I didn't take it as disrespect. But you gota think, the higher up in the rpm you are in say 1st gear when you shift, the higher up you will be in the rpm now in 2nd. Say you shift at 5500 rpm into 2nd and now your at 3000 rpm. Where if you shifter at 7000 rpm now you are at 4500 rpm. Back into the peak power and boost. I believe that is the faster way in a straight line.

[Srirachaa]

@tredts I didn't mean any disrespect. I have an STi as well stage 2.Yes they are very tough cars and can take it. My point is that there is no advantage. If you look at the power curve on a dyno, the turbo drops off around 6k depending on your tune and so does peak horspower.(torque well before that). It does look cool though, if that is what your going for. If you were racing, 4-6k is where you would want to be. Either way nice car, nice driving, just a comment that is debateble.