DTC's came back

[Gorman]

...sorry i meant using another stock exhaust system fabricated to make dual pipe system...G.

[cpapashley]

Originally Posted by Gorman

...sorry i meant using another stock exhaust system fabricated to make dual pipe system...G.

You are full of good ideas G. That was actually the way I was heading in some ways, was going to get a second hand system of the local Ford's. It was when I realised that someone I knew had an exhaust shop close by that I thought I would go this way.

Something for me to think about if I upgrade some time to a 3.0l

[Gorman]

... Ok back to the thread. I fitted the 19 lb injectors, a new engine harness (injector plug broken on the old one) and port matched the UIM to the lower. I put on the plug wires i bought from cougarguy939 (thanks the're great). I've reset the ECU..so now we wait to see if the P0171/4 codes come back...G.

[cpapashley]

Originally Posted by Gorman

... Ok back to the thread. I fitted the 19 lb injectors, a new engine harness (injector plug broken on the old one) and port matched the UIM to the lower. I put on the plug wires i bought from cougarguy939 (thanks the're great). I've reset the ECU..so now we wait to see if the P0171/4 codes come back...G.

I want to know if you are flowing more air at all?? Be so good to look at some datalogs, anyway you can send me some files at all. Surely the pc can spit out some csv files or something. Just send them direct to my email if you like. I will find the time to graph etc etc....

[Gorman]

csv... i'll have to look that one up. 48 hrs+ and no codes at all... G.

[cpapashley]

Originally Posted by Gorman

csv... i'll have to look that one up. 48 hrs+ and no codes at all... G.

I think usually two driving cycles, you should also be able to check pending codes as well, in this NGS system I have it has a FD prefix for the item. Not too sure if that is available on the ELM system or not.

[Gorman]

..ok csv, comma separated values. I've just got the software for datalogging...and my floppy has decided to go on strike . Anyhow...72 hrs+ and some spirited driving later...no codes at all . Not sure if i had a problem which was corrected during the work...but peace of mind with the injectors and having an UIM ready ported for a GB max extrude is great.. G.

[gamiller]

Originally Posted by Gorman

I haven't logged the MAF voltage yet..do you know what the max air volume for the stock MAF is ?

I'm coming late to the party, but Joey of Nautilus Performance (a.k.a. BurritaSVT) told me that the OEM MAF maxes out at 35 lbs/min. If you've done the rest of the SVT conversion, it sounds like the 19 lb injectors will work nicely. Good luck!

[cpapashley]

Hi, G

notice in that other thread there was a bit of heat on the codes, the 19lb wont work unless there is something to tune with. With the MAF having so much capacity it means to me that something like a greddy/safc would work fine as an interim, if you don't have a means to flash the pcm.

I will say though you need to make sure that there is no intake leak, and that those oem o2 sensors are all good, also that the MAF is ok. But from memory you checked all that.

Just check all those intake spots with a spray of brake cleaner to see if there is any leaks at all??

[Gorman]

Originally Posted by cpapashley

Hi, G

notice in that other thread there was a bit of heat on the codes, the 19lb wont work unless there is something to tune with. With the MAF having so much capacity it means to me that something like a greddy/safc would work fine as an interim, if you don't have a means to flash the pcm.

I will say though you need to make sure that there is no intake leak, and that those oem o2 sensors are all good, also that the MAF is ok. But from memory you checked all that.

Well A. it's over a week and the codes have not come back. I only said that there may have been a leak..the car showed no symptoms at all of an air leak when i had those codes It did 140mph..it would not go that fast with an air leak.. I believe my sensors are ok..they tally with the readouts i get from emissions tests. The 160g / sec equals 24lbs a min of air..maf goes to 35lbs , no prob there then. The car runs OK now but only reaches 110. So.. it runs very smoothly, idles fine..but does need a tune/injector constant table update... I think what you said about open loop and closed loop running is proved by this. Personally i prefer to have to drive slowly for a while with the 19's than have the 17's and the risk of overheating and engine failiure when overtaking at high rev's in 3rd...G.