30 dollar Intake Manifold

[neverlift]

I was just making a joke about a 15:1 with turbo in the sliders thread and thought to myself a ka that has 15:1,of coarse with all bolt ons and major head porting and full valve/valvetrain upgrade, tuned.

As for the safc get one they are the best "fine tuner" possible. from a piggy back stand point. They are awsome for that slight rich/lean area you may find in the fuel map that is hurting performance/economy. If used properly one could pay for itself in a matter of months.

I was just curious to see if you was trying to bust that envelope open like < those teeth. 11.2:1 is a bit more than what I would trust the gas around here But some octane boost could fix that. Always put some meth in the mix to keep knock/ping down,not too much tho.

[Bigvinnie]

The only problem with an SAFC is that you can't see any MAPS, so in the process you would need to use a wide band to tune as well as a dyno, so that you know that it is making the power needed. I myself don't have time to run to a dyno shop all the time so I use a wide band to try and tune as best as possible, then I go out to make a 1/4 mile time. It seems to be effective, but still it could show for greater improvement.Since I have done tuning on the biki for other 240members I have found it to be the best offered for us OBD1 KA guy's. It's really only $100 more for a wide range of tuning.

[neverlift]

no no he is saying he is going to get both. the safc is just to "fine tune". And he knows damn good and well not to go ****ing with the fueling with no afr monitor. When he gets the board for his de you should help him

[matt4pl]

hmmm when i designed my plenum i went for abiout 2.4L, after having read that on a NA motor you wanted as much volume as possible. oh well.

so heres my big questoin: pros and cons of not running any sort of controlled IAC, just a bolt/screw to keep the throttles cracked open a bit.

btw im running a MS, DIS conversion, open stack itb's, s13 cams, hotshot header, 2.5: catback, no cats, UR pulley, should be completed sometime in january







in the pic i still have the plenum attached, but its gone now. this was when i was running a stock ecu

[DjPantsSpecR]

i know, i even saw you selling that too....

what are the pros and cons of not having an idling system?

well you think the car is going to die ALOT. it never does, but you mihgt think it will.

when you close the throttle the rpm's fall, and then they fall to around where you set the idle, but sometime sit falls to 500 adn then bounces between 500-800 before it settles.

it hardly happens at all on stock cams, or when its warm outside. so really the only pro of IACV and AAC is that you dont have that bouncy idle and you dont have t worry about it dieing.

once you get over that though....

[matt4pl]

i ran the car without IAC when i 1st did the itb's, for a week or two. idled just fine. only thing i noticed is when i let off at a higher rpm it would backfire like mad all the way down. without a cat, it should provide for an interesting show for whoever is behind me, unless i can tune the MS to deal with it

[Bigvinnie]

hmmm when i designed my plenum i went for abiout 2.4L, after having read that on a NA motor you wanted as much volume as possible. oh well.

so heres my big questoin: pros and cons of not running any sort of controlled IAC, just a bolt/screw to keep the throttles cracked open a bit.

btw im running a MS, DIS conversion, open stack itb's, s13 cams, hotshot header, 2.5: catback, no cats, UR pulley, should be completed sometime in

You can use a 2.4 liter plenum. No one said that you couldn't use one. But once the plenum becomes matched to the size of it's displacement then other issues start to come into effect such as swirl and velocity which are key contributors to making power. When I mean making power more on midrange of the power band. A 2.4 liter plenum would serve well for a high rpm and rev track engine.On another note when I brought up the IACV it was for a good reason.......There is little to no manual fine tuning involved!!!!!!! In any circumstance if I wasn't using it, and I did need to use a bolt to hold the butterfly open it would just bring me back to the days of tunning webbers or mikuni's, which is nothing more but a pain in the A$$. IACV's are great for regulating decel as well as idle, it serves it's benefits.
Modified by Bigvinnie at 7:48 PM 12/19/2006