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Old 01-02-2014, 09:09 PM   #1
lsmaro
 
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boost range

does anyone have a idea of what the llt can safely boost with ipf supercharger and a bigger fuel pump like the zl1 pump
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Old 01-02-2014, 09:22 PM   #2
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I think Arno said 10 psi was the most you could put through.
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Old 01-07-2014, 08:23 PM   #3
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why are these motors limited to 10psi is it because the CR or lack of forged internals
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Old 01-07-2014, 08:40 PM   #4
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Originally Posted by lsmaro View Post
why are these motors limited to 10psi is it because the CR or lack of forged internals
That and a lack of fuel


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Old 01-07-2014, 08:50 PM   #5
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Perhaps he's talking about the limit of the centri unit itself. The amount of fuel needed will be determined by the CFM air moving through. I'm not sure what that would be at 10 psi for the centri unit, but based on what I'm seeing for the dyno sheets for the IPF, I think that would be a little less than the limit for the HPFP. Just a guess on my part, but I think you can get 450 RWHP on a A6 and 480 RWHP on a M6 and still not max out the pump. I don't think you would get hose numbers with 10 psi on the IPF system. Well, maybe on Sycrafts car, but not any of the others I've seen. Again, just my opinion.
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Old 01-07-2014, 08:53 PM   #6
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Arno told me i could go with a 10% smaller pulley making approximately 14LBS and id be good. i have yet to do this but its a fun idea to play with
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Old 01-08-2014, 08:03 PM   #7
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with all bolt on mods, a supercharger, bigger fuel pump and bigger rear end gear ported intake would the llt break 500 or what would it be close to as far as hp/tq numbers
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Old 01-08-2014, 08:56 PM   #8
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Arno told me i could go with a 10% smaller pulley making approximately 14LBS and id be good. i have yet to do this but its a fun idea to play with
Good to know that, I was planning on going to a smaller pulley whenever I get replacement parts.
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Old 01-08-2014, 09:52 PM   #9
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Here is the post I was referring to:
http://www.camaro5.com/forums/showpo...0&postcount=37
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Old 01-09-2014, 10:38 AM   #10
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Arno told me i could go with a 10% smaller pulley making approximately 14LBS and id be good. i have yet to do this but its a fun idea to play with
But does he recommend it? I doubt IPF does...especially not with their warrantied setups. If you don't have their extended warranty, then I'm guessing they may not care.

But I was told by Arno (I think??...its been a while) that 9 psi was basically the max on the standard system and they felt that was a strong but safe level for an other stock LLT. I've never seen him say much about using a smaller pulley for more boost.

In fact, I've seen him say that using higher boost can result in less power in some cases ( I can't remember exactly why right now)...but if the tune for it is good, and the fuel is there I don't see why it wouldn't make more power.
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Old 01-09-2014, 08:38 PM   #11
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But does he recommend it? I doubt IPF does...especially not with their warrantied setups. If you don't have their extended warranty, then I'm guessing they may not care.

But I was told by Arno (I think??...its been a while) that 9 psi was basically the max on the standard system and they felt that was a strong but safe level for an other stock LLT. I've never seen him say much about using a smaller pulley for more boost.

In fact, I've seen him say that using higher boost can result in less power in some cases ( I can't remember exactly why right now)...but if the tune for it is good, and the fuel is there I don't see why it wouldn't make more power.
Wonder if its from pulling timing due to too much boost.

Wonder if E85 would allow more boost, have a V6 run in the 9's.
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Old 01-10-2014, 10:09 PM   #12
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But does he recommend it? I doubt IPF does...especially not with their warrantied setups. If you don't have their extended warranty, then I'm guessing they may not care.

But I was told by Arno (I think??...its been a while) that 9 psi was basically the max on the standard system and they felt that was a strong but safe level for an other stock LLT. I've never seen him say much about using a smaller pulley for more boost.

In fact, I've seen him say that using higher boost can result in less power in some cases ( I can't remember exactly why right now)...but if the tune for it is good, and the fuel is there I don't see why it wouldn't make more power.
For clarification, does the stock kit run 9 PSI?

Could you turn up the boost to 9 psi easily if not?
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Old 01-11-2014, 03:50 PM   #13
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For clarification, does the stock kit run 9 PSI?

Could you turn up the boost to 9 psi easily if not?
Stock kit on a stock car should hit 10 psi @ 7200 RPM's. If not you have a boost leak according to Arno. Once you add mods your boost will go down, like mine is at 8-9 psi since I have headers and ported intake manifold along with a few other mods.
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Old 01-11-2014, 05:11 PM   #14
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great info guys. I will be supercharging this spring with a lot of other mods so just had to make sure I knew what I will be getting
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Old 01-12-2014, 11:21 AM   #15
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Originally Posted by KMPrenger View Post
But does he recommend it? I doubt IPF does...especially not with their warrantied setups. If you don't have their extended warranty, then I'm guessing they may not care.

But I was told by Arno (I think??...its been a while) that 9 psi was basically the max on the standard system and they felt that was a strong but safe level for an other stock LLT. I've never seen him say much about using a smaller pulley for more boost.

In fact, I've seen him say that using higher boost can result in less power in some cases ( I can't remember exactly why right now)...but if the tune for it is good, and the fuel is there I don't see why it wouldn't make more power.
Is it recommended, No probably not. These Kits hit 10psi when you ring it out to 7200 rpm, and what him and I were talking about 14psi at 7200 rpm, the main goal was to have more power down a little lower. Arno said that there should be no fuel problems at 14psi... but Iv gone lean at the top of 4th so I know I'm not getting enough fuel at the top end. Im dying for the HPTuners, I want some one in my car when they tune it...

as for the less power with more boost, I think thats due to the high compression, need to retard the timing to much. I don't know if thats a problem the 14.. I think Gretch and Cant_See_Me ran 14 for awhile with few engine problems.
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Old 01-12-2014, 04:30 PM   #16
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I've been running 14#s with no fueling issues
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Old 01-12-2014, 09:56 PM   #17
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HP you have a "stock" LFX right? as far as pistons, stroke...
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Old 01-13-2014, 08:01 PM   #18
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HP you have a "stock" LFX right? as far as pistons, stroke...
far from stock. but yes all stock internals.
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