anyone have a link to an adjustable FPR for a 2.2L.
I actually did a search and it came up with nil results.
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Your better off using an SAFC-2. The chances are you don't need more fuel, you'll need less fuel the more you mod (all motor on stock compression).
www.kronosperformance.com / 732-742-8837
Agent Omega custom fit a Honda's FPR onto his fuel rail! Clean install it looked like also! Check my profile and future mods list to find the actual name of the unit! I'm sure he may post eventually when he spots this post also!
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An LT1 fpr is the same as the 2.2 fpr. I'm not sure whether or not the Camaro LT1 or Vette LT1 is the one you want, though. You have to look at the direction of the mounting tab.
You can buy just the "hat" part and use your regulator. You can also cut a coil or two off the stock spring inside if you need a lower pressure setting. Most are good down to 30 psi, I needed to go lower with 52 lb/hr injectors.
Looky what the search engine turned up.
-->Slow
I've never looked at a 2200 fuel rail so I don't know if a 96 2.2 would have that same regulator.
sorry I should have mentioned mine was a '96.
I've been told that on an n/a setup you would want an AFR somewhere around 12.5 or so. Stock gasoline engines run 14.7 (more lean) I know I do not need less fuel.
some guys have installed 4 TBI injectors and dropped the pressure way down, but they were on 2nd gens, and I haven't heard of anyone using these on 3rd gens like mine.
I did a search for 2.2 FPR and nothing came up.
Steve
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NJs Honda Killa wrote: The chances are you don't need more fuel, you'll need less fuel the more you mod (all motor on stock compression).
this is for a forced induction setup too, btw.
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even though that wouldn't matter with boost, this is just for now while i'm still n/a
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stevefire wrote:
I've been told that on an n/a setup you would want an AFR somewhere around 12.5 or so. Stock gasoline engines run 14.7 (more lean) I know I do not need less fuel.
Steve
A stock engine will run a 14.7:1 AFR in open loop (not above 75% throttle) when it's using the O2 sensor's input to determine how much fuel to add, same as any modded engine that runs right. Where you want a 12.5:1 AFR is at WOT (75%+ throttle), and I'm not sure what a stock motor would run @ WOT.
I believe you want the Camaro LT1 AFPR for the 2.2's, I wish the link for "Fuel Under Pressure" was still good, if anyone has a working link could you please post it?
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ok so I found this pressure regulator from accel. pn: ACC-74565
I searched on the summit website.
as you can see they have mounting brackets on either side of the FPR, I know which one I want, but they don't give you the option of selecting either. I went with a 93 LT1 camaro, and it came up with these. (I need the one on the left!)
any suggestions as to how I found out which PN to order?
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stevefire wrote:NJs Honda Killa wrote: The chances are you don't need more fuel, you'll need less fuel the more you mod (all motor on stock compression).
this is for a forced induction setup too, btw.
Sorry about that...didn't know you were boosted, that's why I wrote being all motor on stock compression. Even so, an SAFC-2 would still benefit you.
www.kronosperformance.com / 732-742-8837
its cool, I'm trying to understand why you'd need less fuel with more mods you do, that part has me confused.
perhaps allowing your engine to breathe easier might help fuel economy... is that what you mean?
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Quote:
some guys have installed 4 TBI injectors and dropped the pressure way down, but they were on 2nd gens, and I haven't heard of anyone using these on 3rd gens like mine.
Ummm... that's me. 4 tbi injectors, dropped static pressure to something around 17 psi, switched to turbo Sunbird ecm, changed the injector drivers and sense resistors in the ecm, changed injector wiring to dual batch fire, and spent a lot of time tuning. A lot! I'm not sure it's practical with a stock OBDII ecm. My injectors run in a mode called "quasi asynchronous mode" at least part of the time which is a fancy way of saying "the injectors are so dang big that we can't make the opening time small enough, so we'll open it 1/2 as often for 2x as long." Whew!
The FPR is from an LT1. Like I said in the other thread, you can use the "hat" to make your own. TPIS # is 100-023 on page 11 of online catalog.
I checked Delphi's site, and they list the stock 92-97 2.2 regulator as the same as the 95 2.3 and 96-98 2.4 It's also the same regulator as the 92-96 Corvette. So you can buy a regulator by application for either the 92-96 Corvette or for the Q4 based J car engine.
You generally need lower fuel pressure if you install larger injectors, especially if you can't adjust anything inside the pcm.
-->Slow
i believe you can get an Aeromotive FPR for the LT1 to work rather well.
I was a retard, and now I'm permanently banned.
ok I've been looking at adj. FPR's for the LT1, and the 94-97's had the bracket on the wrong side.
if looking at it straight on their bracket is on the left, and mine is on the right. (like the above picture, mine would be the one you see on the left)
am I missing something here?
Did each bank on the LT1's have their FPR brackets on opposite sides? I can't see GM doing that.
thanks for the help so far.
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or did they only have 1 FPR for both banks?
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stevefire wrote:or did they only have 1 FPR for both banks?
i believe LT1s had 1 FPR for both banks.
I was a retard, and now I'm permanently banned.
just an update:
I found an adj. FPR top hat conversion for the LT1's.
Its made by Metco. (It came highly recommended by a friend with an LT1, more so then the accel)
http://www.thunderracing.com/catalog/?action=vshop&vid=4&pcid=164
3rd item down on the page.
I'm going to buy this, and see if it works out. Its worth a shot... worst that could happen is I'd have to sell it to an LT1 owner that needed one if it didn't fit. (but it will fit)
check it out, I'd like to hear your opinions on it.
I might have to make some modifications to the injector bracket for the added thickness of the top hat.
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Well, that looks just like the one mentioned in the post I linked to... [URL=http://store.summitracing.com/default.asp?target=partdetail.asp&autofilter=1&Ntt=acc%2D74758&N=0∂=ACC%2D74758&autoview=sku&Ntk=KeywordSearch]accell 74758[/URL]. But it's a few bucks less, so what the heck... go for it. I used the TPIS style hat so I didn't have to make any modifications. Well, that and the fact that it came up on Ebay with the regulator for about $45.
.
After reading Delphi's specifications, I set my regulator so the total fuel pressure (base setting plus max boost achieved) didn't exceed about 80 psi. This was with stock 1995 injectors installed, and it allowed me to hit 6 psi boost then drop to about 4 psi as engine rpm increased. Justa FYI in case you're looking for more fuel under boost.
-->Slow
FYI: for those wanting buy the assembled FPR for the '95-'97 2.2L, you want the '93 LT1 F-Body/'92-'96 LT1 Corvette model. I have cross refferenced these before, and the part numbers are all the same for the stock FPR's. The '94+ LT1 FPR has the bracket reversed, but is otherwise the same.
well this one I dont think is boost referenced, so at WOT and 6lbs of boost, I dont think she's goin any higher. Correct?
how was your tuning with 6lbs on stock injectors? Did you use an FMU?
I'd like to know what I'm up against next year. (though I wont be using an FMU)
thanks!
Steve
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actually my LT1 modding friend said TPIS was 'hit and miss' with their products, although it is better then an accel. adj. FPR. He recommended the metco.
I just ordered it now, so I'll let you know how it goes once she's installed and tuned!
Steve
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If you have the vacuum line connected, it's boost referenced. But it's not rising rate. It's 1:1, so at 6 psi boost you'll have base pressure + 6 psi fuel pressure. With just the AFPR, you'd work backward from 80 to find you can set pressure at 74 psi base.
All my tuning is done with the ECM. I had to sort of start from scratch, since the ecm I used was never offered with the 2.2l engine. The only fuel device is my AFPR. I think I ran with stock injectors for about 4 or 5 weeks, then decided I'd just had enough of not having enough fuel. That tune was easy, since I'd set up much of it NA. But after changing to the big injectors things got very, very different.
If you set your base pressure to 74 psi and leave the tuning stock, your car isn't going to idle worth a damn. You'll need to reduce fuel delivery at idle and low load conditions.
TPIS is generally overpriced. I'd think they couldn't mess up something as simple as the FPR cover. Then again, maybe they could.
You're welcome to a copy of my tune for stock injectors if it's still around here.
-->Slow
yes he also stated that they were very overpriced... now that I think about it, that was more so his argument then whether or not they were 'good'.
in terms of fuel delivery, I think short of a stand alone and top fed conversion, I am stuck with bandaid fixes.
I am selling my cartech/begi 2025 adj.FMU.
Steve
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