how much psi can i run

crxsteve

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ok i have a b18a1 with a trubo kit that has a wastegate for 6psi
i was wondering if i can put a 10 psi one on
it's a all astock motor it has msd s**t thats it

ob0 b18a1


thanks for any help
and just wondering how much power would i get??
 

Steven.

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id say around 7, 10 with a real good tune. moved to FI tech
 


Evan.

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what turbo? psi is nothing without knowing the size of the turbo.
 

FG1R18

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I'd say keep it at 6psi (7 at most) to be safe. boost it up when you know it's completely safe to do it. i've seen cracked exhaust/intake manifolds, preignitions, and F'd up internals occur with cranking up the boost unsafely.
 

Revolver

Oct 10th
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FG1R18 said:
I'd say keep it at 6psi (7 at most) to be safe. boost it up when you know it's completely safe to do it. i've seen cracked exhaust/intake manifolds, preignitions, and F'd up internals occur with cranking up the boost unsafely.
A cracked intake manifold from boost? WTF!? Bullshit...

There must be a DANGER TO MANIFOLD!!! gif on the intraweb somewhere...
 

1999CivicEX

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Revolver said:
A cracked intake manifold from boost? WTF!? Bullshit...

There must be a DANGER TO MANIFOLD!!! gif on the intraweb somewhere...

^ hahaha

Without knowign the turbo it is hard to say how much you can run. You can run lbs on turbo and it will be find and on a another and throw rods.

With a good ass tune you might be able to get away with 10

what are you tuning with?
 

1999CivicEX

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FG1R18 said:
I'd say keep it at 6psi (7 at most) to be safe. boost it up when you know it's completely safe to do it. i've seen cracked exhaust/intake manifolds, preignitions, and F'd up internals occur with cranking up the boost unsafely.
hmmm. My mani in my old DSM was glowing because I was rich as hell
 

420GREEN

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Wow, I've read alot of crazy s**t but this site takes the cake...........(the size of the turbo is only going to determine how much lag you're going to have not how much you're boosting, just depends on the wastegate setting) Who cares what turbo you're runnin' as long as you're not boosting beyond what the fuel system can handle.....running lean with timing thats a little off with shitty gas will detonate and cause serious issues........(burned valves, pop a rod through the block, blow oil rings, etc.,etc.,etc....) Get a reputable boost gauge and a rich/lean meter to keep tabs on how much boost you really are running and the air/fuel is to see if you need more fuel at full boost and if you have a reputable "Import Performance" shop near by to help you out with your tuning needs.....I'd just get a stronger fuel pump, a fuel pressure regulator, a little larger injectors, and reset/ retard the timing and then you can boost up safely to 10 to 14 pounds easily..BEEN THERE, DONE IT!!! PEACE.............
 

Evan.

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420GREEN said:
Wow, I've read alot of crazy s**t but this site takes the cake...........(the size of the turbo is only going to determine how much lag you're going to have not how much you're boosting, just depends on the wastegate setting) Who cares what turbo you're runnin' as long as you're not boosting beyond what the fuel system can handle.....running lean with timing thats a little off with shitty gas will detonate and cause serious issues........(burned valves, pop a rod through the block, blow oil rings, etc.,etc.,etc....) Get a reputable boost gauge and a rich/lean meter to keep tabs on how much boost you really are running and the air/fuel is to see if you need more fuel at full boost and if you have a reputable "Import Performance" shop near by to help you out with your tuning needs.....I'd just get a stronger fuel pump, a fuel pressure regulator, a little larger injectors, and reset/ retard the timing and then you can boost up safely to 10 to 14 pounds easily..BEEN THERE, DONE IT!!! PEACE.............
so your believe 10 psi on a t25 is the same as 10 psi on a gt35r?
 

Revolver

Oct 10th
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sk8shorty017 said:
so your believe 10 psi on a t25 is the same as 10 psi on a gt35r?
And as long as your not boosting beyond the fuel system, the mechanical limitations of a motor aren't a problem... :roll:
 

420GREEN

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Yes, 10psi on a T25 and on a T3/4X is the same, the only difference is that the smaller turbo will have a quicker spool-up time (little turbo lag) but can only boost to certain point in the upper rpm's before it struggles to create constant boost , and the bigger turbo will have more lag but can boost higher and pull strong all the way to redline.........so if you drive day-to-day and don't really thrash alot the smaller turbo is cool, but if you plan on racing at all you will have to get something bigger and badder..........and than it's stand alone time for some serious tuning...............PEACE
 
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Evan.

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420GREEN said:
Yes, 10psi on a T25 and on a T3/4X is the same, the only difference is that the smaller turbo will have a quicker spool-up time (little turbo lag) but can only boost to certain point in the upper rpm's before it struggles to create constant boost , and the bigger turbo will have more lag but can boost higher and pull strong all the way to redline.........so if you drive day-to-day and don't really thrash alot the smaller turbo is cool, but if you plan on racing at all you will have to get something bigger and badder..........and than it's stand alone time for some serious tuning...............PEACE
once again, i have to disagree. a t25 is a small turbo, while a gt35r is huge - used on evo8's, highly modded civics (jezek lol), etc. If you run 10 psi on a gt35r, you could easily hit 300whp, while 10 psi on a t25 will get you a lil over 200whp, so the turbo makes a huge difference. Of course the amount of lag increases / decreases, but so does the power. If it didnt, why would they bother making different size turbos? Here buy this turbo so you get more lag... :roll:
 

420GREEN

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read my reply again or lean on your monitor and maybe it'll sink in........................
 

420GREEN

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10psi on a gt35r and ther getting 300hp...........what Bazzarro universe are you livin in!!!! That turbo boosts all the way up to all the way up to redline like I explained and is boosting alot more than 10psi when it hits redline, and the smaller turbo usually peaks at about 3/4 to redline which means it doesn't pull or make anymore power in the higher rpms......and bigger turbos mean alot more money which I can see you can't afford so keep on reading while I have already BEEN THERE,AND DONE IT!!!!!!!!
 

Evan.

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420GREEN said:
10psi on a gt35r and ther getting 300hp...........what Bazzarro universe are you livin in!!!! That turbo boosts all the way up to all the way up to redline like I explained and is boosting alot more than 10psi when it hits redline, and the smaller turbo usually peaks at about 3/4 to redline which means it doesn't pull or make anymore power in the higher rpms......and bigger turbos mean alot more money which I can see you can't afford so keep on reading while I have already BEEN THERE,AND DONE IT!!!!!!!!
lol... too bad I was just boosted with a gt28r..(spent over 5 bills on it). Second, what you explaned just totally contradicted your argument in the first place. I said that the turbo size does matter and you said it doesnt, although here you just said :

420GREEN said:
That turbo [gt35r] boosts all the way up to all the way up to redline like I explained and is boosting alot more than 10psi when it hits redline, and the smaller turbo usually peaks at about 3/4 to redline which means it doesn't pull or make anymore power in the higher rpms
so then obviously there is a difference and turbo size DOES matter.
 

ryan89crx

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Revolver said:
A cracked intake manifold from boost? WTF!? Bullshit...

There must be a DANGER TO MANIFOLD!!! gif on the intraweb somewhere...
like this? :D

 


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