Okay guys/gals, I ran the most modded STi here in my hometown in the 1/8th last night. I would get off the line 1/2 car on him and by the end 1 to 1 1/2 cars he'd have on me.. says he's got full bolt ons plus UTEC and is planning on bolting on a GT35R soon... got me thinking about his set up.. saw an injen cold air intake, hard upper and lower IC, turboback exhaust, definitely had cams unsure as to which kind, and low and behold he pulls out a tank from the trunk and starts filling his car... with 100 octane... only kind he puts in the car!
my mods are intake, bushur 3' turboback exhaust, running on 93, UTEC boost is set up at 24psi, no tuning yet really no knock though and car runs fine, i'm planning on adding upper and lower IC piping, 880cc injectors, a new manifold and then finally getting it professionally tuned.... what do you guys think about this?

 

i dont understand what you are asking....you were beat by an sti with more mods than you and running 100oct in the 1/8th...

 

i dont know but with those up-coming mods it sounds like it will be no problem for you to beat him or make it a closer race. unless he puts on the turbo kit. but hey, you should really try to get a mail in flash or something, tune your car and you will see better numbers. maybe call turbotrix or one of the other great tuners.

 

get cams, racing fuel and a custom tune and you should be good to go.

 

I'm guessing you're asking about beating this guy too...but I'm not sure. I'd say to get the UTEC tuned by somebody that knows what they're doing. And in a straigt line (unless things break), it's not that easy to beat a fairly modded STi. I mean it is...if you're willing to match him mod for mod or something...anyway, I think that a bit of clarification on what you are actually asking would be nice. And, if he's running 100oct, well...with the proper tune for it that's quite an advantage as well. Take advantate of the maps on the UTEC and set one for 100 oct, so when you see him, you can match up in that area.

 

you guys have pretty much gotten what i'm asking... for my future mods i've currently got the 880CC injectors, a new manifold, i'm going to get 264's for cams and then alittle added surprise... methanol injection kit so i can simply switch over and suddenly ohh look C16 MUAHAHAHAHA

 

Well, with no tuning, you shouldn't expect much. I don't understand how or why you're running 24psi on 93 octane with no tuning, yet claim to have no knock. How do you know you have no knock? Are you going through the trouble of logging your track runs, but not using that info to tune the car with an AFC or with a re-flash? I'm confused.

What were your 1/8-mile times and traps? I think those may tell a story...

Oh, also, what's the point of 880cc injectors? Can the 16g even come close to requiring enough fuel to fully utilize 880s or even 770s? I had 840s on my Talon with a 60-1 turbo (much bigger), but the injectors were so big, that my S-AFC set to -50% in every range still wasn't enough to lean it out. I suppose you may need 880s if you go to a huge turbo, but you didn't mention doing that.

 

I DOUBT he had cams, they are EXTREMELY rare as you have to pull the block just to install them not to mention his turbo couldn’t possibly flow it. There are no real proven cams too.


That is enough for over 300WHP easy, I doubt you have more then 290WHP, probably like 285WHP. I also hope you were not running 24PSI on pump, you were almost certainly detonating (even slightly) just to kill your top end. You have NO tuning, I am 99.9999999999999999999% sure that your timing is being pulled by ALOT to combat detonation. Pull it back to 21PSI or less, you'll have more I promise.

Don’t sleep on a Modded Sti fellaz.

 

I have a wideband 02 that gives me complete info, plus the UTEC is set up so it detects knock, which it doesn't detect any at all so I don't lay worry to a problem that doesn't exist, i'm getting it tuned onec i throw on a few other mods. as for the 880cc injectors, on my stock 550's i'm already doing almost 80% duty cycle, i'm figuring once i get a few more mods on that my duty cycle is going to go up even more so i'm saving myself the trouble of getting tuned and exceeding the duty cycle safety limit on the 550's. I have a friend who's using 770's and his duty cycle on that is already around 85% and i'm following his path so i'm just getting farther prepared ahead

 

more mods and bigger engine

 

For drag racing you'd see the best results with 272s or a combo.

 

80% and 85% are both very low. You speak of them as if they are nearing danger or something, but you can go up to 100% before you have to upgrade. If your friend is at 85% on 770s, he still has a long way to go. Unless you are going to use a huge turbo, you don't even need 770s. What do you consider to be the safety limit?

As for the O2/knock issue. I'd think about checking my connections, because running 24psi on 93 is sure to cause knock and retarded timing. Again, what were your 1/8th-mile times, and do you have a timeslip?

 

actually its dangerous around 90% duty cycle in my humble opinion... you say its safe to run to 100%.. thats insane you run a higher issue of one of the injectors getting stuck and BOOM engine go bye bye total loss then and i'm not willing to risk that in the least...
as for going cams i'm going 264's for the time being b/c I see it as more feasable... once i go larger turbo i'll jump up to the combo 264/272 since it seems to be a great working combo from what i've been told by some guys who run that kind of setup,
as for my knock/02 i've checked the connections their set up professionally into the car no problems what so ever or the computer would throw a code, etc... I've done the checking on the install

 

You dont want to run an injector above 85%. You can its just very risky if one injector sticks or you have a problem boom. New motor time.

Just my .02

Chris

 

that's what i go by, never run over 90%. even though i may be close injectors are close on my list.