Quote from: twalt13Dont think it changes the shift points, just chipped my STE and it wants to cut boost under WOT at the shift points.  Did an idle re-learn (again) and will wait about a week to see what it does now.

It will. The boost is cut slightly at shift points to lessen the strain on the tranny. Stock and modified chips do this. The chips Jeff sells ramp the boost up much faster after the shift amont other things.

Chris

So what problems can happen if too big a fuel injector is used?

I am still looking into the possibilty of Accel 24 lb/hr, and dont want to rule them out because one person is testing them right now. Thank you Mark, all input is appreciated!

Living in florida, i personaly think it important to retain the stock setup of getting cool air that has not gone thru the radiator, so i went to k&n website, found a panel style filter that was as close to stock size as possible, trimmed it quite a bit, and tucked it in stock air box.

I had actually stuck a vacume guage line in the stock air box,
where hose to crankcase goes,  to see how much vacume was occuring with paper filter, the needle showed some vacume at WOT, I never did repeat after installing K&N.
to each his own

Quote from: florida_tgpLiving in florida, i personaly think it important to retain the stock setup of getting cool air that has not gone thru the radiator, so i went to k&n website, found a panel style filter that was as close to stock size as possible, trimmed it quite a bit, and tucked it in stock air box.

I had actually stuck a vacume guage line in the stock air box,
where hose to crankcase goes,  to see how much vacume was occuring with paper filter, the needle showed some vacume at WOT, I never did repeat after installing K&N.
to each his own

what was that P/N?? for the K&N

Mark,

    How are the new injectors working out?  Any problems yet?

Thomas

screw accel i'm running stock until I get p&p heads and a bigger turbo.

Mark,

Any status update on the aftermarket injectors????

Thanks,
GPChief

From the reply, I assume those 24lb injectors aren't working too well...

I found a set of 23lb/hr injectors on Jegs, part number 110-150823, pack of 8, $230.  These are roughly 5% more flow than stock.  I think the ECM can compensate for the change by reducing the BLM/INT numbers.  Not to mention, these injectors are the pintle style, instead if the Multitec style...which I don't like.  

I bought a set of stock BRAND NEW GM injectors to replace the leaking injectors in my TurboSTE.  Now, less than a year later, they are leaking again.  In fact, they've probably been leaking for some time now.  I attribute the problem to the design of the injector, because the injectors in my Cutlass Convertible (Multitec style) were leaking too.  I always use good gas, from quality stations.

Or you could wait for the Jeff M 29lb chip, but I understand you'll need his heads too in addition to the injectors.

Jason

Jason,

Those injectors that you found in Jegs, What brand were they?

Accell

Jason,

Was looking at those also.....It just isnt cost effective to spend $130+ for one injector of the old style when you can get the new style for roughly $30.00 a piece.

Have heard both ways, they work well and that they dont......Someone please either dispell the myth, or make it true.

Thomas

Well, it depends on what is wrong with your injectors.  Like I said, the Multitec style injector has problems leaking (so I've determined by the 12 injectors I've got that leak).  I'm thinking a switch to the pintle style injector will fix the problem of leaking injector replacement every 10 months.  Also, the Multitec injector has a problem with clogging...then the injector heats up and eventually burns out the injector.  

In fact, I think more injectors are leaking then people actually think (or want to admit).  If anyone has these problems...it could be a leaking injector(s):

-Bad fuel economy (assuming no other econo problems like O2 sensor)
-Idles higher than normal
-Spikes in idle speed due to fan turn-on/compressor turn-on/putting the car into park or neutral
-Overall weak idle (goes real low when putting in to gear)

Now, people can have these problems and have it be something else, but 75%-95% of the time it's cause of one or more bad/leaking injectors.  Sure, (even at GM retail price) it might be cheaper to buy one injector if only one of yours is bad than it would be to buy a set, but you don't know if any of the others are on their way out.  So you spend $130 now, and 2 weeks later you have to spend it again.  Why not spend a little extra cash and replace them all?  I think it only makes sense to buy the whole set.

And I think a lot of the problem of people saying they suck has to do with which one they go with.  If they get a set of injectors that is too big, they are back where they started--running rich because of leaking injector(s).  The ECM cannot adjust enough (using BLM/INT) for the larger flow injector, so it runs rich...and like crap.  In fact, I'm even a little concerned about running the 23 lb injectors with stock calibration.  They aren't much bigger, but they are big enough that the BLM will be less than 128 (say 120).  Now when you floor it (the ECM goes into PE Mode), the BLM will go to 128 because it was less than 128 before PE Mode, and the car will run rich during that time.  Not that this is necessarily a problem, but it might not be "peak" performance.  I'll have to some research, and when I get some extra cash I'm going to get a set of the 23 lb injectors and try them.  I'll let everyone know what happens.

Jason

I've got bad injectors (leaky), & no time (like everyone else).

Thanks Jason

Sorry its been so long.  That car never ceses to piss me off.  The transmission hates to shift at WOT and it still smokes, but only on rare ocasions.  I finally changed my oil return line, but it still does it.  Its weird.  It runs for a week without smokeing then it will litterally make you want to run form it in fear it smokes so bad.  Then it will quit smoking again.

Anyway, as far as the injectors (which the smoking was my original reason for discovering they were bad, that and it quit running and kept flooding itself when I tried to start it) they are working great.  Unless they are leaking and causeing my smoke.  I doubt it...I would think an injector would be all the time.  I still haven't put a new air cleaner on it.  I don't want to spend any money on a car that has 10,000 miles on a rebuild that smokes.  Its so misterious.  It doesn't act like a normal car that would smoke.  
The car does smell a little rich when I start it at first.  I haven't noticed a change in fuel economy.  I would say that the factory ecm is doing a great job of compensating for the bigger injector.  And if you use the calculator for flow requirements on the Accel web page...it will show that the 22lb/hr injectors are just right.  I want a factor of safety.  That is why I went with the 24.  I was also afraid that the Accel flow rating may not agree with the MultiTec and once again I wanted to be safe.  
All in all, I am happy with my injectors.  I don't race the car, because it doesn't shift like I would want it to and that causes it to embarrass me with times like I don't even want to mention on here.

The injectors...along with a new air cleaner and a chip that allows more boost...I think would be great.  The ECM will compensate for the small change in flow rate.  That is what the O2 sensor is for. :wink:

I exchanged my injectors with a set from http://www.lindertech.com/reconinj.htm
The set was $149 and they're flow matched.  I sent my set to them and had a rebuilt set within a week.  The car runs great now.

Mark as for your random smoking, do you know if its gas or oil?  I had a 2.8 V6 beretta once that had a cracked ECM board.  It would flood really bad while cranking but if you heated the computer it would start right up.  Very strange problem.  Might want to look at your at the electronics too.