OK me and QBE were having this problem with my car before. I start the car and attach the check valve to my Cartech BEGI. I then unhook my vac line to the FMU and tune the fuel pressure to 48 psi. Now when i attach it it should drop about 10-15 psi but instead its dropping to 10 psi. We thought the FMU was bad so i ordered another one and put it on. SAME DAMN THING again. I took off my intake manifold and made sure that was sealed and double checked everythign. Does anyone think the injectors might be screwed up somehow or anything. Im running fine at idle with a/f around 16.5 but as soon a I go WOT the a/f goes straight to 10.0 and stays there. I can get about 6 psi of boost in 3rd gear at around 4500 rpm. I have the accell injectors from hahn but i bought them used off of devin M on here when i bought his turbo kit. All suggestions are more than welcomed i just wanna get this fixed. I can take all the pictures you need to help me figure this out.
its because hahn does not use an afpr.. they use the begi unit which negates the sole reason it was made for... to get rid of that lean spot regular fmu's have...
but since hahn uses it to adjust base pressure.. that convenience is gone...
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So if i run an aeromotive adjustable fuel pressure regulator its going to solve this problem and itll all be ok. The only reason this is pissin me off is because there are plenty of people running just the cartech without a afpr and its running fine but mine isnt so something is wrong somewhere. But if you say so ill order it and see what happens
Heres the one. AEROMOTIVE PART #13109
you dont even need an afpr really, i just used a brass needle valve AFTER the fmu to adjust my base pressure, and since the Onset setting is higher then the base even through vacuum the fuel pressure will inscrease as if it was a normal FPR and it works exactly like it would if you had an fpr and only cost about 8 dollars.
Just a much cheaper alternative thats working flawlessly on my car.
208whp 239wtq
13.7 @ 102mph 2.19 60'
that could also work
my point being is for the cartech to work the way it was designed you need someway to adjust your base without the fmu itself so you can use the oinset setting
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Heres what i did. I ordered the aeromotive fmu and fitting to hook it all up. I think the total was like 200. IM sending my FMU back and getting a refund since there was nothing wrong with the one i have. I order through summit so it should be here tomorrow. Ill just im you QBE and you can give me a hand setting it up since your running the same setup. One question though. Do you connect a vaccum line to the FMU and the AFPR?
QBE (The Boosted One) wrote:its because hahn does not use an afpr.. they use the begi unit which negates the sole reason it was made for... to get rid of that lean spot regular fmu's have...
but since hahn uses it to adjust base pressure.. that convenience is gone...
It's funny that you straight out just called Hahn's kit wrong but yet more people have had success with it AS IS then have issues. Funny that it's wrong though. I'm glad to know that a company that used the kit on their own car to run 12s, that has tested the kit on numerous cars and conditions like those I see everyday in daily use, and that has done more research on their kits that anyone on JBO doesn't know what they're doing. I'm so glad your around to tell us the right way to do things.
Oh and I don't have any flat spots smartass. Don't be saying someone's method is wrong just because it's not done the way YOU THINK it needs to be done.
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
did I say hahn made the kit wrong?
I dont think so... lol
go be a douche somewhere else...
its because no one else monitors their fuel pressures thats why no one cares....
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I never said hahns was wrong.. I said there is better ways to go about using the cartech then slapping it on and deleting the fpr... so now you either have very lwo fuel pressure out of boost like 10 psi or less... or MASSIVE fuel pressure anywhere in the rpm and boost...
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OK i see where everyone is coming from with different setups and all but lets just say theoritically I there was nothing wrong and my setup is fine and all. Is everyone with the Hahn setup having the same fuel pressure at idle and in boost as i am? I described it above in the first post of my fuel pressure and all.
Blue Splash wrote:OK i see where everyone is coming from with different setups and all but lets just say theoritically I there was nothing wrong and my setup is fine and all. Is everyone with the Hahn setup having the same fuel pressure at idle and in boost as i am? I described it above in the first post of my fuel pressure and all.
probly but 75psi of fuel pressure is bad for the stock pump that will wear it out quick... I run MAX 55 psi... thats under a full boost of 10 psi
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Hey man lay off quit making me feel bad and saying people are wrong and right!!!! All you guys crack me up sometimes. Just kidding. All the parts will be here tomorrow. IM gonna hook it up and then give you a shout to see what i should set the idle pressure at, the base pressure at on the FMU and the rate of boost setting and all that. Cool?
QBE (The Boosted One) wrote:its because hahn does not use an afpr.. they use the begi unit which negates the sole reason it was made for... to get rid of that lean spot regular fmu's have...
but since hahn uses it to adjust base pressure.. that convenience is gone...
That seems to be saying, without being direct, that Hahn's way is wrong and your way is right. Just so you know there's over 500 kits out there from them using this same method with very few issues.
75PSI is not going to hurt the stock pump. I run 100PSI at 15PSI and my stock pump is working fine almost 30K miles later. Hahntoo, I believe, has the stock intank pump in there with a booster as well. Funny that you say it'll die fast though. Seems to have worked to over 400HP and 20+PSI and I know they aren't running under 75PSI.
Care to try any other false accusations Phil? Don't bash someones stuff that's proven it works because you were "told" it's not the "proper" way to use it. Ever hear of using things for your needs?
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
Oh and have you tried calling or email Hahn's tech support for some correct and appropriate help? I think they'd be better qualified to answer any questions and help you with any issues on THEIR kit than Phil.
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
Its not the complete hahn kit. Its the turbo, manifold, accel injectors and cartech FMU from hahn. Ill call them in the morn and ask them if they can give me a clue to whats going on otherwise im going to run the aeromotive anyways. Even the instruction for the cartech says in large bold print, "Do not remove you stock or aftermarket fuel pressure regulator. " Again no one is saying anyone is worng im just saying what the instrucion are saying.
Team Vision Racing (aka hypsy) wrote:QBE (The Boosted One) wrote:its because hahn does not use an afpr.. they use the begi unit which negates the sole reason it was made for... to get rid of that lean spot regular fmu's have...
but since hahn uses it to adjust base pressure.. that convenience is gone...
That seems to be saying, without being direct, that Hahn's way is wrong and your way is right. Just so you know there's over 500 kits out there from them using this same method with very few issues.
75PSI is not going to hurt the stock pump. I run 100PSI at 15PSI and my stock pump is working fine almost 30K miles later. Hahntoo, I believe, has the stock intank pump in there with a booster as well. Funny that you say it'll die fast though. Seems to have worked to over 400HP and 20+PSI and I know they aren't running under 75PSI.
Care to try any other false accusations Phil? Don't bash someones stuff that's proven it works because you were "told" it's not the "proper" way to use it. Ever hear of using things for your needs?
not bashing and I enjoy how you say using a booster pump newb... with a booster pump the stock pump isnt seeing 75 psi probly 30 if that
still using the cartech that was deisgned for an onset increase in fuel psi for something is else is NOT using it the way it was designed THATS my argument....
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Team Vision Racing (aka hypsy) wrote:Oh and have you tried calling or email Hahn's tech support for some correct and appropriate help? I think they'd be better qualified to answer any questions and help you with any issues on THEIR kit than Phil.
not giving him help on a hahn kit... I am giving him something help on something i was ecuated on by corky bell himself when I spent an hr on the phone with him one wednesday afternoon...
care to make anymore false accusations?
when do you plan on removing bills penis from your buttocks?
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oh and btw I have no problem with bill adam or any hahn kit user, its a good kit.. but I think somethings could be used better
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QBE (The Boosted One) wrote: ... I am giving him something help on something i was ecuated on by corky bell himself when I spent an hr on the phone with him one wednesday afternoon...
Dude, I have talked to Corky a few times myself.... Very intelligent man, although he kinda reminded me of Ben Stein
Kool guy though, even sent me a free rebuild kit...
P&P Tuning
420.5whp / 359.8wtq
yeah the dude is really cool.... really explaiend that thing down to a T and helped me decide on which unit to get..
although I couldnt type from crap in that psot heh
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Phil, when are you going to learn that hypsy is God?
__________________________________________________________________
Performance cars do not win car shows and show cars do not win races.
It's up to you to decide which you'd rather win.
Ian Lacey wrote:Phil, when are you going to learn that hypsy is God?
not soon enough I guess...
Jay wrote:Corky is the man.
Corky Bell> Bill Hahn
amen!
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I have been using the hahn kit for a lil over a month now. And i havn't had a problem with the way there kit is setup without the stock FPR. I was worried something was wrong a few times, but nothing was...
At idle im running 35psi fuel pressure(may be a lil rich). At partial throttle i see about 55-60 psi and 3-4 psi of boost. And at WOT with abou 8-9 psi of boost i see 85psi of fuel pressure.
My a/f numbers are fine at WOT i see my a/f numbers go around 11.2-11.5 (maybe a lil rich). And my car seems to be running real strong with this kit... I have no complaints!!!
2004 Turbo cavalier 11PSI and blown!
