i got +20% injectors... what now???

[turbovanman]

MAP cut-out raiser from www.dawesdevices.com

[87Shadow]

Yes 2bar map, and 20+ injectors, base fuel was set at 43PSI.
Just make sure you don't lean out, watch your EGT. I didn't have a EGT at the time, but with the head off it looks fine. Was still rich in the top end. Down low I was REALLY rich. I wouldn't bother with a cal for 20+, just a waste of money.

Quote:

Originally posted by unclejemima hey "87Shadow", were you running a 2bar map and 22psi? How did you do it safely? -mark

Don't get a Map cut out, you'll have to dial it in for different altitudes. Just use a Zener Diode (4.7V) and you'll be great. I used that to trick the computer, and a boost controller to up the boost.

[turbovanman]

Quote:

Originally posted by 87Shadow Don't get a Map cut out, you'll have to dial it in for different altitudes. Just use a Zener Diode (4.7V) and you'll be great. I used that to trick the computer, and a boost controller to up the boost.

Hmmmm, interesting, I am at sea level, have gone up the mountains snowboarding and such and never had a problem!

[Turbozcs2003]

The combination of injector, computer, boost.

The early LM can tolerate the larger +20's and compensate for idle,part throttle etc. So poeple with 2.2's converted can run an "equivalent" GLHS Stg 2 module and live happy with the +20's without
playing with fuel pressure to compensate. Best move is to get a stg 2 GLHS and have the overboost eliminated by the computer programer. My 86 has one and runs great.

The later 88/89 Smecs and the 90 SBEC's your on your own. I have been told without a custom cal, they dont like having the larger injectors. The ywill run pig rich and idl;e for crap. I dont see how people turn down the FP(for idle)to run the larger injectors at higher boost, defeats the purpose?

THe 90+ SBECs are even more difficult to program and there doesn seem to be a lot of folks running them.

Anybody have a SBEC Cal on a 90+ 2.5 with good results??

Mike

[turbovanman]

Quote:

Originally posted by Turbozcs2003 The later 88/89 Smecs and the 90 SBEC's your on your own. I have been told without a custom cal, they dont like having the larger injectors. The ywill run pig rich and idl;e for crap. I dont see how people turn down the FP(for idle)to run the larger injectors at higher boost, defeats the purpose?

It doesn't defeat the purpose as you don't drive around the city at 20-30 pounds of boost. I have my boost set to 12 on the street and the fuel pressure around 30 psi, it runs great, lots of fuel and still gets 14-18 mpg depending on right foot mode,


It takes 2 minutes at the track to turn up the fuel pressure!

[Turbozcs2003]

Well why not run the stock injectors and 30 MPG and turn up the fuel pressure to 60 PSI base at the track???

14-18 around town is terrible. Have you done an oil analysis on your van?? I bet your loaded up with fuel in the oil. Your wear rate on bearings and rings will be very high.

My dilemma is getting a good cal for my 90 Daytona to run the 3 bar Map and +40's. I really dont want to have to resort to playing with the FP.

Mike

[cletis234]

Hell I run 18psi on a stock t2 with nothing than a blow off valve(1g) and two bleeds. I also have a cone filter on it also and thats it. She has 147000 some odd miles on it. No extra fuel, stock intercooler, and the **** thing still has an overheating problem and has been my daily driver for a year, and I am not light on the gas.

[turbovanman]

I drive a MINI van, there pigs on gas. Did a survey on here and thats normal for turbo vans My oil is clean and my engine has now over 20,000 km's, and passes emissions test no problem. 30 mpg in a mini is **** near impossible.

I did run the stock injectors till this year as at 18 psi they were maxed out and I needed more fuel to run faster. I had the return line blocked to run the necessary fuel last year. Now I have the 255 pump and +20's.

[iloveshelbys]

so am I able to run my setup without the +20 injectors and have my boost to 15psi almost all of the time without any problems? ... wont that be running to lean?

BUT if I am to put in the +20's I have to do something else... so would the fuel pump mentioned by turbovanman and a A/F gauge be sufficient or do I need something else... like the calibration to my computer ?

[turbovanman]

Every car is different. You will have to check your air/fuel with 15 psi. If its lean, then you will have to add cold starts which make daily driving hard or get +20's and a afpr as well as a custom cal as 20's with stock fuel pressure will run rich for daily driving, unless you turn back the fuel pressure but then you will be lean, doh!

[TurboShadowES]

i know this is kind of back from the dead but turbovanman when you run that much boost ona the +20's what do you set your FP at? im working on a new theroy on how to run my +20's with a 3:1 RRR. if you told me were your fuel pressure I would have a better idea if it would work or not.

also how much boost? i need to know to do some math...

[FrankNbeans]

Why dont you guys just add a extra injector when it starts to lean out?? This is what my plan is... crank up the boost untill it starts to lean.. what 15-16lbs.. .then just smack in a extra injector right in front of the TB. No messing with FP or injectors...

[glhsken]

Turbozcs2003 has a good grasp on thngs... Vanman.. I've said this before, I have no clue how that 2.5 of yours stays together. But it does Not great to tell everyone what your engine has done, unless you put the caveat there. 99% of the folks who try what you are able to do will have ashtrays.

Aside from that, I am very puzzled. Why would you buy +20's and then ask what to do. Granted you need to know. But doesn't it make much more sense to have a clear path charted BEFORE you buy the parts??

[glhsken]

"Being a man takes lots of Drinking,Shooting, Hummping and Horring.........more Drinking.......and horring if there is time!"

Yo Jeremy... horring is spelled with a "W"

[iloveshelbys]

simple....i got the +20's brand new for a good price and since my plan was to run 14-15psi ..why not buy them