LBE
05-20-2003, 03:26 PM
#1
Racer
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LBE
How do i know how much psi i can increase my lbe to? i have straight thru stainless exhaust,shimmed wastegate, k+n air filter and aftermarket chips, my lbe is set at the 10psi that it was set at when i got it, can i increase this and make my car faster?
05-20-2003, 04:43 PM
#2
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yes ...just be sure you have enough gas and spark?? are you on stock 34.5 lb/per ..then they are good to about 16 lbs of boost...or 1.1 bar..just pull the screw out till there is about 4 threads showing..you should be gtg! <img border="0" alt="[bigbye]" title="" src="graemlins/xyxwave.gif" />
05-20-2003, 04:51 PM
#3
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34.5/per???, i am not really all that clued up on the figures, i have only just started doing mods to my car, it is stock other than the mods i have mentioned in this post
05-20-2003, 05:09 PM
#4
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okay well you are good to about 16 lbs. then...i was referring to your stock injectors...they are 34.5 lb.injectors if you want to run more boost then you will need bigger injectors...i am getting a set of 55 lb. myself...athough you might need to get your piggy back ecu ..redone because i dont know what you air/fuel ratio will be with your current chip set up...anyone care to help on this subject???
05-20-2003, 05:11 PM
#5
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"34.5/per???"
That's the flow-rating of the stock injectors: 34.6 lb/hr. We went back and forth forever trying to figure that out and Bosch wasn't very helpful with providing data on their products. Took some empirical data through actual testing to figure that one out. See the RC-Engineering flow-tests on stock injectors here: <a href="http://forums.rennlist.com/cgi-bin/rennforums/ultimatebb.cgi?ubb=get_topic;f=18;t=001996#000018" target="_blank">WTK- Injector requirements for 400rwhp</a>
That's the flow-rating of the stock injectors: 34.6 lb/hr. We went back and forth forever trying to figure that out and Bosch wasn't very helpful with providing data on their products. Took some empirical data through actual testing to figure that one out. See the RC-Engineering flow-tests on stock injectors here: <a href="http://forums.rennlist.com/cgi-bin/rennforums/ultimatebb.cgi?ubb=get_topic;f=18;t=001996#000018" target="_blank">WTK- Injector requirements for 400rwhp</a>
05-20-2003, 05:32 PM
#6
Racer
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just tried increasing psi on boost enhancer, i think i followed the instructions correctly but my car feels slower!! i adjusted it effectively reducing the length of the boost enhancer is this the right way or have i got it all wrong!!
05-20-2003, 05:43 PM
#7
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the more threads you have showing the less boost you are pushing..the less threads you have showing the more boost your pushing...hope this helps..
<a href="http://www.lindseyracing.com/" target="_blank">http://www.lindseyracing.com/</a>
click on 944/968 ..then engine mods..then boost enahancer..then addjustments.. <img border="0" title="" alt="[Wink]" src="wink.gif" />
<a href="http://www.lindseyracing.com/" target="_blank">http://www.lindseyracing.com/</a>
click on 944/968 ..then engine mods..then boost enahancer..then addjustments.. <img border="0" title="" alt="[Wink]" src="wink.gif" />
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05-20-2003, 05:51 PM
#8
Racer
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ok so it sounds like i was going the correct way, i had only 4 threads showing when it was set at the factory 10 psi, i have now changed it approxiametly 4 psi to 14 and have no threads showing now, i reckon that i could only turn it about another 2 turns before the locknut was hard up against the outlet
05-20-2003, 05:58 PM
#9
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I would strongly suggest getting a boost gauge before you blow up your engine. I wouldnt mess around with the boost until you know where you are putting it. Also, if you want to increase boost, you should consider a chip change, because you need the added fuel to go with the added air.
05-20-2003, 06:03 PM
#10
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i dont have a boost gauge other than the factory fitted one but i do have aftermarket chips that i bought from 944online, i have moved it approxiametly 4 psi but i dont notice any difference in power, if anything it feels slower but maybe that is in my head!!!
05-20-2003, 06:11 PM
#11
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Well, An aftermarket boost gauge will tell you exactly what boost you are running, and then you can go from there. At around 50 bucks, I think it is a sound investment.
05-20-2003, 06:18 PM
#12
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ok, i think i will adjust it back down to 10 or 11 psi to be on the safe side, i am only doing this to annoy my mate who has an rb5 subaru impreza turbo, i couldnt keep up with him before so started modding my car and can now keep up with him and maybe even edge it, maybe i was getting greedy trying to blow him away!!
05-20-2003, 09:36 PM
#13
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We all know about trying to keep up with friends..be careful with your 951 if your friend blows his subaru it isint going to cost him near what it will cost you if you blow yours.Take Boostguy951's advice and get a boost gauge that way it will take the guess work out of it.No sense in causing a $2500.00 rebuild ...for a part you can get $100.00
05-21-2003, 03:11 AM
#15
You should get an aftermarket boost gauge !
Any figures available for those chips you have??? Iam not familiar with 944online's chips. Are they cloned from some more known ones?? If you would like to have guranteed results, go to Guru chips.
Any figures available for those chips you have??? Iam not familiar with 944online's chips. Are they cloned from some more known ones?? If you would like to have guranteed results, go to Guru chips.