I have found as long as the pressure of the external regulator is higher than the tbi regulator you don’t have to do anything to the tbi reg. Just hook the return of the tbi to the inlet of the...
Type: Posts; User: myburb
I have found as long as the pressure of the external regulator is higher than the tbi regulator you don’t have to do anything to the tbi reg. Just hook the return of the tbi to the inlet of the...
For years I have run my BB chev in open loop. To keep it happy with oat temp changes I have used the mat sensor ticked and the blend of .852. My sensor is at the base of a non stock air cleaner so...
I can’t remember if I have low zif or not but I cut a piece of 1/2” thick foam, got some slightly longer screws, put the cover back on and screwed down enough to put a little tension on the chip. ...
It might be worthwhile to check the wire from the injectors to the computer for any possible shorts. If there is any short the injector will just run continuously.
I kept searching and the best I could come up with is an older standard motor products TJ11. The new smp tj11 looks more like a gm injector
Any 305 injectors I have seen look the same as any other gm tbi injectors. Here is pics of the injectors on the camaro site
After my last post I ran across an old post on a Camaro board and had pics of injectors that looked the same and came from a 305 in a camaro. They never did ident them and then the thread got off...
I am guessing I didn’t do my question correctly. I know what the stock 95/94 injectors spec at and look like. When I took mine apart it had one stock gm injector in one side and the odd ball in...
I have a bbc with a 94 throttle body. When I modded the engine I never took the injectors out, I upped the fuel pressure and did a tune and all has been well for a long time. Lately one injector...
The injectors are physically the same size.
If you are using a 95 bin and a 7427, without any fancy tuning you need the 94-95 injector and a fuel pump putting out at least 30+ psi. I have been involved with several of those swaps. With tuning...
The computer is pcm, power control module ( I think I used the right wording ) and it controls both the engine and the trans. The chip needs to be correct for both the engine and the trans. When...
I think you would be wise to try to get 94/95 pcm that is closest to what ever vehicle the 95 4l80e came from. That way the transmission will be happier and the motor is the easy part of the swap....
Thanks for the reply. As I said I am obd1 so don’t want to fill other topics with my questions. How would a snapon scanner be able to identify individual cylinders rich or lean? I could see it saying...
I didn’t want to piggyback on the estate wagon thread so a separate topic. Am I correct in thinking the individual cylinder trim is just a trim figure gm puts in to compensate for individual runner...
I am only obd1 so not up on these systems but have been watching this for quite awhile. Would it have been an idea to reset the blm before pulling the o2s. I would think that would allow it to...
Are you sure the two switches in the back of the apu are as required?
I don’t have cats and I don’t have lt1 but you have been working on this for awhile. Do I read it that when you took off both cats it was fine? If so could it be you had 2 bad cats with the left...
Pull the fuel pump relay, the plugs, change oil if cantaminated with fuel and crank it over. should clear everything out
Possible leaky poppet valve on the spider.
Something in the numbers doesn't sound right. 7427 is obd1, 94-95 is obd1 and 1998 is obd2. Maybe a little more info as to what and where vehicle is.
If you look in definitions/wiring this forum for $85/7060 the wiring diagrams in that thread is probably what you want. They indicate for 1991 but I know those diagrams were correct for a 93 7060 so...
In reference to the edelbrock 454 tbi intake, even though they say it won't fit 91-95 it fits just fine. There is a couple of assessory holes that are different but it works just fine. I have it on...
Have you got setup yet to do proper data logs. It could be that it is rich enough on start up but as temp increases and it relies more on the ve table in open loop and the ve table is not correct.
I know this is off the OP question but if anyone knows where you can find factory open loop export bins for a 7.4 I would be interested to see how the factory went about it.