Just curious where our bottlenecks are via airflow in the ecotec. Any info on this would be appreciated. I only brought up throttlebody because some of the ecotec cavaliers have noticed a few hp gains from them. Normally asperated im not sure...

 

what eco are you talking about? LSJ, LE9, LNF, ect....

 

Eh srry, i have an ss/sc so the LSJ which im thinking is around 60-61 mm?

 

You aren't bottle necking at a 60mm TB at <300hp.

 

our tb can withstand 10000000000000000 hp....whats ur point?

Someone who knows anything about our psi and bottlenecks in our engine via airflow pls.

 

I just told you, you aren't maxing out a 60mm throttle body at <300hp. There cars making 400+hp on 60mm TB. Spend your money in other places, the TB isn't going to be a restriction for you for a long long time.

 

No one is maxxing out their exhaust manifolds either....that doesnt mean we dont want more airflow.

18 PSI is telling me there is a bottleneck.....

 

You're missing the point you could bolt on a 110mm TB and you wouldn't gain even 1/4hp because you aren't anywhere near the limits of a 60mm one. The only thing you'll do is turn 60% throttle and 100% throttle into the same thing because the TB is oversized for the power you're making.

 

however you would have less restriction and less psi, heat, wear and tear.

 

ugh... It's just not worth it.

Have a ball, throw a 200mm on there. I bet that will drop charge temps into the sub zero range it will have so little restriction.

 

lmfao
Being serious though, I wouldnt mind 75 mm at the butterfly.

 

You'd gain 0.00hp and would nothing but make throttle angle to air let in relationship more aggresive. And that results in nothing more than what I just said, making 60-80% throttle the same as WOT. At 300hp you're engine can't pull enough air for the 60mm to be a restricition, you aren't helping anything by making that inlet bigger.

 

Obviously when I see 18 psi it means im using it all and its not wasted air....its actually accomodated. yes i see clearly now

your one of those kids who thinks more boost = more hp?

 

Say wha bro? That didn't even make any sense.

 

I really dont want to flame you.....

seriously your making this rough......

 

It's simple. At 300hp (which is what the highest power blower guys are making) a 60mm TB is more than adequate.

 

the problem with running a huge ass TB is drivability.

cause you can easily go from vacuum to atmosphere easily.

but with FI it's easier to get by with a smaller tb since it's forced.

 

Not going to go huge, just larger... ie: us using 3 inch exhaust instead of stock, however ive heard the same thing about that. I find it very difficult for it going atmosphere very easily with forced induction.

If thats the conclusion Ill go with it, however I'll wait for more opinions on it.

dude... our blower doesnt make 300 hp. Our stock internals support it max (if you believe GM).

Im not worried about my TB exploding.

 

If you are only answering this post in response to TB and horsepower just dont even respond. If, however you are responding via CFM, PSI reduction etc let me know.

 

OMG I can't believe this thread is going on...

First of all, you have a LSJ with a supercharger that creates or better word "builds" pressure in the manifold. I don't know why you keep mentioning "18 PSI" when this is POST-throttle body.

Another thing, pre-throttle body, you're still following the basic principal of air intake velocity. Making the hole bigger isn't going to make air come in any faster, it will just slow it down. If you were shoving in a MASSIVE quantity of air with a LARGE turbocharger then this would be a different story because that would all be done PRE-throttle body.

So AWDStyles is absolutely correct, it's a worthless upgrade.

Also, just cause the J-body guys picked up a "couple of HP" doesn't mean it was at all a bottleneck. For all you know, they shifted their powerband upwards, gained 2-3 HP and lossed 5 lbs of torque in the lower portion of the powerband from the change with air intake velocity.

Your throttle body is FAR from being a bottleneck.

 

once again you offer nothing to it...suprise? flame on!



k .... so is this
https://www.cobaltss.net/forums/forced-induction-50/what-20psi-does-plastic-intake-manifold-54808/


your almost right....not quite tho

It makes the compressed air go in faster...yes, not the total air molecules itself which is detonated. Saying it will go slower is like comparing you sucking on a straw and then with the same amount of pressure with a 3 inch pipe. Same air is coming in, just not at the same "velocity" and density. Why do people want 3' CAI? I know....why dont you hook up a 1' CAI and tell me why that fast air is making you lose hp?

keep it constructive

 

dude,, you already have your mind set on buying a bigger TB so why ask us for any advice if your not willing to hear our opinions... ? and also NJHK is one of the most knowledgefull people here, so I would hear him out when he advices you something.

 

He mentioned it was post throttlebody....that was the only piece that deterred my tb question as not a big deal. The rest was fluff.....as usual

 

what was fluff? you just don't want to accept the fact that it won't do anything for you. why are you so set on a bigger tb?

 

I was looking at it as "part of" an option for increasing air flow overall. Boost your car to mars, id rather sit at 15 psi but with maxed amount of air.