Cheap DIY way to reduce lag
#46
Okay, I am new to all of this but liking the concept. The lag has always bothered me and not knowing a whole bunch about these diesels I had no idea what to do to change it.
I will wait for follow up reports as to any issues found and how it affects the mpg.
Personally, the "T" fitting ideas sounds like the best option so as not to confuse the computer too much. Hopefully you guys will post some picks of the set up once you determine what works the best.
Thanks for posting this.
I will wait for follow up reports as to any issues found and how it affects the mpg.
Personally, the "T" fitting ideas sounds like the best option so as not to confuse the computer too much. Hopefully you guys will post some picks of the set up once you determine what works the best.
Thanks for posting this.
#48
Here is how I built mine. Used compression fittings and 1/4" copper tube wound in a coil. At the end of that I put the T fitting and the EBP sensor mounted upside down. From there it goes into a small brass filter and then into the MAP sensor. Doesn't get any warmer than everything else under the hood, warm to touch but that is it.
So, does it work? YES. I am running a 1.15 Van turbo so drive pressure may be more 1:1 than that of a .84 ar stocker. Can feel it the most at....get this....low rpm! Spool up is much faster and comes on much harder. Where is can really be felt is going up a hill in OD at a lower RPM. Makes 1-2psi more boost at 1500-1600rpm. Running a 45hp tow tune and smoke is basically zero but feels more like an 85hp tune, especially down low.
So, does it work? YES. I am running a 1.15 Van turbo so drive pressure may be more 1:1 than that of a .84 ar stocker. Can feel it the most at....get this....low rpm! Spool up is much faster and comes on much harder. Where is can really be felt is going up a hill in OD at a lower RPM. Makes 1-2psi more boost at 1500-1600rpm. Running a 45hp tow tune and smoke is basically zero but feels more like an 85hp tune, especially down low.
#52
#53
18.1-18.3 has been the norm. Ya, i boosted it when first installed yhe mapmod, but not so much to effect a minimum of 1.4mpg. That 18ish has been for a yr and a new found 2# boost with new MAP. Got 175 on her today being the norm. With have anutha 180 by wednesday night so will top her off and compare..i cannlive with yhe 1ish loss with the "lag" diminished but not the fed line to map. And i aint goin brokejoke route. I do dig the coiled idear but fit finish needs polishing somehow. If i find that, id go back to MapMod
#54
The coiled copper tube is completely pointless as far as heat goes. This isn't a 'flow through' where lots of exhaust heat will be traveling up the tube, it's a dead end and no exhaust will be flowing. I have regular ole fuel hose on a barb fitting straight to the EBP tube, not even a hose clamp on it. I haven't put a lot of miles on it, but enough to get everything to full temp a few times. If there was much exhaust heat coming up the EBP tube that fuel hose woulda melted off.
The EBP sensor mounted upside down is a good way to assure that any soot that gets to it will accumulate in it and get packed down into it, tho the long tube should cut that down.
The EBP sensor mounted upside down is a good way to assure that any soot that gets to it will accumulate in it and get packed down into it, tho the long tube should cut that down.
#55
#56
The coiled copper tube is completely pointless as far as heat goes. This isn't a 'flow through' where lots of exhaust heat will be traveling up the tube, it's a dead end and no exhaust will be flowing. I have regular ole fuel hose on a barb fitting straight to the EBP tube, not even a hose clamp on it. I haven't put a lot of miles on it, but enough to get everything to full temp a few times. If there was much exhaust heat coming up the EBP tube that fuel hose woulda melted off.
The EBP sensor mounted upside down is a good way to assure that any soot that gets to it will accumulate in it and get packed down into it, tho the long tube should cut that down.
The EBP sensor mounted upside down is a good way to assure that any soot that gets to it will accumulate in it and get packed down into it, tho the long tube should cut that down.
#57
#58
I was never considering this for my truck and the 1.5 MPG drop that Timmy saw, well I think that speaks for itself.