BER.coalhauler Posted November 14, 2016 Share Posted November 14, 2016 I currently have an '02 E7 350. Is it possible to change the ECM and add a boost sensor to upgrade this to a 460? Also is it possible to "cheat" the boost sensor by adding a resistor inline on the boost circuit? If so how many ohms resistor does it need to read max 32 psi boost? Quote Link to comment Share on other sites More sharing options...
Mackpro Posted November 14, 2016 Share Posted November 14, 2016 On the CCRS engines, I would not go to 460 HP. With the 460 HP you have to use the wategated turbo and install boost sensor. If for any reason the boost is not in the correct range (to high or to low) , the ECM will derate power. We have problems with keeping the boost just right after the truck get some miles on them. What we do is download to 427 and put the 427 turbo on but use 460 HP injectors. Injector part # 736GB420M3X. After downloading to 427 HP, we go back to Mack and ask for engine data file 1MS5135. Runs with the 460's then. 1 Quote Link to comment Share on other sites More sharing options...
BER.coalhauler Posted November 15, 2016 Author Share Posted November 15, 2016 Thanks Mackpro. Is it possible to use the 460 w a 427 turbo if I were to isolate the boost sensor to where it would read 30 psi constantly? Quote Link to comment Share on other sites More sharing options...
Mackpro Posted November 15, 2016 Share Posted November 15, 2016 I don't know for sure. I know max boost is around 33 psi. The truck will also derate for low boost as well. I don't know if the ECM looks at boost when controlling fuel delivery. Here are a couple of service bulletins on the 460 CCRS. CCRS wastegate operation.pdf Wastegate 4-5 code CCRS.pdf Quote Link to comment Share on other sites More sharing options...
BER.coalhauler Posted November 15, 2016 Author Share Posted November 15, 2016 Mack Pro, Is that injector PN a CCRS PN or pre-CCRS? I'd need the CCRS part number. Quote Link to comment Share on other sites More sharing options...
BER.coalhauler Posted November 15, 2016 Author Share Posted November 15, 2016 I did isolate the boost sensor in a small regulated 30 psi tank, it done unbelievably well😜! According to my boost gauge in the dash this turbo will boost around 38psi in a dead pull Quote Link to comment Share on other sites More sharing options...
BER.coalhauler Posted November 15, 2016 Author Share Posted November 15, 2016 Anymore suggestions about how to gain a few more ponies? Anyone? Quote Link to comment Share on other sites More sharing options...
fjh Posted November 16, 2016 Share Posted November 16, 2016 If your pulling 38 be happy thats good boost for that engine as pro mentioned if the ecu were able to see what the engine was truely making it would have derated at 33! A good running AC engine with VGT is making that kind of boost your right in the Zone! Quote Link to comment Share on other sites More sharing options...
Mackpro Posted November 16, 2016 Share Posted November 16, 2016 22 hours ago, BER.coalhauler said: Anymore suggestions about how to gain a few more ponies? Anyone? If this is in a RD. You might rig up 5" exhaust with a good Walker high flow muffler. I was thinking the RD's had 5" at turbo and necked down to 4" pipe and a 4" in/5" out muffler. Dont know how much it would help but it couldnt hurt. Quote Link to comment Share on other sites More sharing options...
BER.coalhauler Posted November 17, 2016 Author Share Posted November 17, 2016 On November 15, 2016 at 3:51 PM, BER.coalhauler said: I did isolate the boost sensor in a small regulated 30 psi tank, it done unbelievably well😜! According to my boost gauge in the dash this turbo will boost around 38psi in a dead pull It is in an RD 688 Mack Pro, and yes u r correct on the exhaust layout. I'll give it a try. Thanks Quote Link to comment Share on other sites More sharing options...
Mackpro Posted November 17, 2016 Share Posted November 17, 2016 On 11/15/2016 at 0:22 PM, BER.coalhauler said: Mack Pro, Is that injector PN a CCRS PN or pre-CCRS? I'd need the CCRS part number. Yes , that is a CCRS injector. Original part number for a 460 HP injector is a 736GB410M. The Reman part number is now 736GB420M3X. Here is a chart I put together for the 350HP and up CCRS engines that shows turbo and injector part numbers scan0325.pdf Quote Link to comment Share on other sites More sharing options...
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