CAI Semi-complete

[Superdave]

If you need some more 3.5" pipe just let me know.. i bought a 4' stick and i'm only going to use about 12" of it.. lol


I did buy steel though, that way i can use it for more than just intakes...

[geldartb]

what do you have done to your engine to require the use of 110 octane.

from the looks of your garage here all you have is a stock 3400 a 3500 uim and a 75mm tb and a redneck exhaust setup.

[Superdave]

I'll have to take that into consideration... I've been touching 30* advance on my car and I'm starting to wonder if that's too much.

Could be, i run all my 3400 tunes at 24-28 in the WOT cells, i've only had 1 show knock. it can also depend on how rich your tune is at WOT.

[1988GTU]

VP is the way to go (for boost!) !

But likely you will not need that 110 with what you have. You dont have 100, 101, 104 (all those are unleaded by me) ?? Those would have been a better fuel to use and not kill o2's.

[95SleeperAcheiva]

Aaron! figures! no worries, I'll be needing more soon. Especially the T=bolt clamps, aero seals aint cuttin it. Round up what 3.5" you got and let me know.

[3400-95-Modified]

Just because you can run more advance w/o picking up knock doesn't mean you should.. Just a few degrees too much can cause a drastic power loss. Anything over 28 degrees @ WOT and mine is unhappy.

I'll have to take that into consideration... I've been touching 30* advance on my car and I'm starting to wonder if that's too much.

[AaronGTR]

Dang, wish I had known you were looking for intake parts. I have several 3" and 3.5" pieces of piping along with silicone couplers and t-bolt clamps left over from my project I am trying to get rid of... oh well.

So is that 110 octane leaded or unleaded? I thought the highest unleaded you could find was 104? If it is leaded but it's only 4-5 gallons, you could mix that in with a tank or two of unleaded high octane and dilute it. It's still not good for you O2 sensor or you cat, but a few gallons diluted won't kill them immediately. You'd have to run a couple tanks of straight leaded to totally junk them. You will pick up a few octane points that way, but like everyone already said, it's probably not going to do you any good. If you are going to play with fuel octane and ignition timing, you really need to do it on a dyno where you can see the point of diminishing returns.

[robertisaar]

you get the 20HP when you stick the NOS sticker on the intake...

[95SleeperAcheiva]

No, no debate on octane. Yes you guys are right, I've gone over the same thing on spark plugs with people who try to buy the iridium plugs for more power on an all stock motor that only called for coppers.

According to my data recordings....2-3 years past on good 89 octane gas, I had some knock retard. I eliminated that with 93 octane. Since I have yet to get a reading....don't ask, I just keep forgetting to hook up my scanner and take a data log, I'm not taking chances on knock retard since I did do some things to the motor, IDK what it'll like or what its been doing for that matter. Track in a few hours, we'll see then.

BTW 5 gallons 110 octane, $39.57

ANd the CAI looks cool, don't I get 20 HP from looking cool!? :P

[robertisaar]

right, more advance can cause the flame front to actually fight the piston on its upward travel near the end of the compression stroke. but being a drag car, you'll see this as increased ETs... pretty easy to tell when there is too much...

[Superdave]

Just because you can run more advance w/o picking up knock doesn't mean you should.. Just a few degrees too much can cause a drastic power loss. Anything over 28 degrees @ WOT and mine is unhappy.

[robertisaar]

don't look at me: i didn't suggest overpaying for CAI stuff...

[asylummotorsports]

The point being that if buying $40 of fuel is such a major expense, then the CAI wasn't the only thing he absolutely wasted his money on.

Mine runs just fine on 93 and even THAT is likely a waste of money.

[robertisaar]

hence, FAR beyond the point of diminshing returns...

it would probably run as well on 93...

[3400-95-Modified]

There is no debate... most people just don't get it, that's all...

True

well, if 95sleeperacheiva could take advantage of the octane and add more spark, it will make more HP.... but 110 is FAR beyond the point of diminishing returns for this motor.

Well here's the problem... What area can he take advantage of the octane? He does not have higher compression, and adding a butt load of spark is only beneficial for a short period of time. I doubt adding as much spark as that fuel would allow you to, would add all that much HP since this is on a stock engine... at least going by what the pictures depict.