Instant Boost Mod/Boost Actuator Bypass Mod

[Mr_Chunkz]

Apparantly this topic has been brought up numerous times and beaten to death. I cant find an exact answer to what i am looking for so here goes

1- anyone have a pic of the old/new hosing needed for this modification?
2- how badly would this mod damage your trans? I am running OEM Trans fluid + Trans cooler
3- Will the EBC be truly disabled because of this mod? I like the idea of in-between shifts boost cut

The lag on the freeway kills it for me. When I want to overtake I punch it and it shifts one gear down ( i remember it used to shift two gears down ) and it takes forever to really kick. On the street its great but freeway it feels..... lazy

And yes Vik, I AM posting this cause youre laggin on tellin me how to do it!!!!

[CASTRO]

1.) yeah, but its hard to see so easier to explain
2.) It wont damage your trans as much as it would your engine as it can't cut boost when knocking/pinging
3.) Yes, boost is based on engine vacuum. Meaning once it hits neutral atmospheric pressure aka 0boost like a motor that wasnt running, itll add additional boost via closed actuator.

[Mr_Chunkz]

well... do you think this would help with my problem on the freeway
also referring back to my wtb post i have a 5.5 pulley waiting to go in
if indeed the "lag" will always be around the same, not even a 5.5 will help me kick the car's as.s into gear cause of "lag time"

[CASTRO]

if you want the car to drop gears quicker, tighten your throttle cable for any slack and loosen the other cable that goes to the tranny a bit. I tightened that cable that goes to the tranny on mines and it likes to climb up the gears faster and leave it in 3rd/4th and hardly wants to go down as the problem you've explained.

I say minimize all your hosing and make sure its all perfectly straight. I get full boost almost any time I want and use and EBC. difference is, mine is setup like a manual so full boost!

[Dawgz]

well tracey, i never said u bypass the actuator...that would be a very dumb thing to do, unless the engine is fully built.


Its not that i dont want to show u what the mod is, its pretty extensive and i had finals last week, ill take pics with explinations this week for ya.

[CASTRO]

the mod is to simply take the bottom port opening under the s/c near the throttle body and route that hose to the actuator. End of story. The rest, just cap it off so dirt wont get it. Its the only hose/barb port thing thats near the throttle body thats WAY under.

[Mr_Chunkz]

upon speculation i think i will leave it alone
instant boost would be cool but now im scared to seriously damage my engine or transmission
I have a heavy right foot.

[CamryOnBronze]

a manual transmission: the other instant boost mod

Maybe I dont know since Ive never experienced a supercharged automatic camry/solara, but what do you mean by lag? Thats the great thing about superchargers- no lag- right?

[Eye8Pussies]

well, the thing about our superchargers is that boost comes on immediately....but unless you down shift to a high rpm, you don't get full boost- the power is still progressive and to a point, so is the boost that we can achieve- i.e. we can't hit full boost at 3K, since the pulley and the rotors don't push the air fast enough at 3K to get full boost

as for the instant boost mod...for an automatic, it's not a problem since it does make boost come on faster, but there is always a lag with an automatic while the TC locks up. But on a manual transmission, you have to make sure that your fuel system is fully capable or else you can run lean on initial throttle

[CASTRO]

well i believe its that temp lean condition thats causing the lag on us auto guys. Sometimes for auto there is a lot of load esp at times when the tranny should have downshifted 1-2 gears lower but never does. Boost builds up because of the tranny holding gear and hance you get that "lag".

For manual cars to experience it, just hold a higher gear than normal and gun it in a car passing situation. Itll make boost instantly all the way to max but the car isnt going anywhere.

I dont really like that instant boost way on auto as it puts more strain on the engine with boost IF the auto doesnt cooperate and downshift correctly. With the EBC at least it can control the boost actuator as it seems necessary for load/etc. Also with the ecu way, ive noticed that the boost buildup is linear compared to instant which may lead to the initial lean which causes higher EGT.

either way, i woulnt even hit boost nowadays with gas prices on the "instant-boost" plan. lol

[Eye8Pussies]

^ not quite...though, you're absolutely correct in that with the auto, when you gun it and the gears don't downshift, the load is extremely high while the fuel catches up, and thus you run lean as you hit boost....but boost still isn't instant (as my wideband has shown me in the past when I was auto)

but, it's the exact same with the manual...high gear, low rpms + high load + boost = running lean. not quite so bad if you have a rising fpr with boost though, but still the same problem. also the same with boost pressure- at low rpms, it's still not possible to hit full boost under those conditions

BUT it's easier to hit full boost with a 5-speed since you can usually downshift 2 gears, putting the rpms into the 5.5-6K range + full throttle

and then, as long as your injectors can keep up (as well as a WOT tune), no matter how much boost you're putting down as your pulley determines, it should go straight into whatever you tuned for and not lean or rich

[Mr_Chunkz]

the big dawgs have responded to my calling
anyway guys im ditching instant boost mod
as i notably recognized while my head has less than 100 miles on it ( I sent the head off to a machining shop, got new valves and seals basically so it was brand new ) my engine block has more than 120k miles as well as my tired tranny that I have been beating on since 90k miles. Instant boost would actually be a bad bad idea for me
I am however lookin at my 5.5 pulley and debating if I wanna run it on that stock 120k mile block. I most likely will

[Eye8Pussies]

you'll be fine! do it! and then you'll never go back.....

[Mr_Chunkz]

you'll be fine! do it! and then you'll never go back.....

lol
you guys were all absolutely correct tho
boost is addicting

[CASTRO]

and expensive! hahaha