02 7.3 Towing Not So Good
#21
12-28-2010, 01:24 AM
Diesel Bomber
truck has 35" tires (not a big difference)i bought the truck as is and am thinking about a 4:10 or a 4:30 but there still sould be a little more power there. If i unplug the waste gate vac line i make 25LBS of boost but when plugged in 19 max no more. Also on the ICP it is new it not stock the ICP in spliced in the the wiring y i dont know but it is aftermarket. i ask the guy i bought it from about the truck haing little supdder and he said just use some injecter cleaner and didnt do anything. by lookin at things the guy i bought it from addressed the problem (spuddering) but never fixed it. i fixed it by replacing the IPR VALVE
You should have no issues towing those loads on 35's and you DO NOT want to go any bigger then 4.10's. I really dont think you would see anymore power and only worse mileage.
Again, need to get it scanned while driving to really get some good info. Might keep your eye out for a cheap superchips tuner to run or hit up one of our sponsers for a good chip.
Do you have a EGT gauge as well as a boost gauge?
#22
12-28-2010, 09:12 AM
so leave the 3:73's in there? and what about SCT i wanted to try them out... if anyone has personal experience with SCT let me know or anything that will get good power and MPG's i get pretty much 12 MPG no matter what
---AutoMerged DoublePost---
oh yah i have an EGT and Boost gauge
---AutoMerged DoublePost---
oh yah i have an EGT and Boost gauge
Last edited by TOWELD; 12-28-2010 at 09:12 AM. Reason: Automerged Doublepost
#23
12-28-2010, 11:12 AM
Diesel Bomber
so leave the 3:73's in there? and what about SCT i wanted to try them out... if anyone has personal experience with SCT let me know or anything that will get good power and MPG's i get pretty much 12 MPG no matter what
---AutoMerged DoublePost---
oh yah i have an EGT and Boost gauge
---AutoMerged DoublePost---
oh yah i have an EGT and Boost gauge
A SCT tuner is fine, I would rather have a chip then any flash type tuner on a 7.3, chips give you more options then a flash tuner does.
What are your EGT's when pulling heavy?
Where is your EGT probe installed at?
#24
12-28-2010, 11:17 AM
#25
12-28-2010, 12:34 PM
#26
12-29-2010, 12:04 AM
k and it hits 24lbs boost so problem solved. Thanks to everyone for ur help but if ur truck ever becomes a slow powerless dog check ur wastegate
#27
01-02-2011, 11:12 PM
from some of the truck i play with depending on year
if the waste gate is not working proberly you could have power loss
or if the waste gate is not set properly
and there is a tube under the turbo on the earlier 7.3 that will have blow by and that will
cause all sorts of power loss
the other problem there could be is you are running over size tires and if your speed has not been recalibrated it can send the computer awire on the late 7.3 they need all the sensors working proparly or your turbo may spool at a higher rpm and make it harder to mantain a speed with a load and or it could be fueling wrong if speed sensor is not right
these would be what i check first
i have had all the problems above and much more that cause power loss
if the waste gate is not working proberly you could have power loss
or if the waste gate is not set properly
and there is a tube under the turbo on the earlier 7.3 that will have blow by and that will
cause all sorts of power loss
the other problem there could be is you are running over size tires and if your speed has not been recalibrated it can send the computer awire on the late 7.3 they need all the sensors working proparly or your turbo may spool at a higher rpm and make it harder to mantain a speed with a load and or it could be fueling wrong if speed sensor is not right
these would be what i check first
i have had all the problems above and much more that cause power loss
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