power falls off at the top - Dodge Diesel

whiskeyrichard · 07-27-2007, 03:53 PM

I have only done a few modifications to my truck so far, and am very happy with the results.

The thing I want to work on now is the mid-top end power. The truck pulls real hard from the bottom, but it seems to fade is I get up around 2200 and higher. I find myself wanting it to shift sooner to get back in the power.

I use my truck to tow a pretty heavy trailer up long steep grades in the Sierra Nevadas, and also use it as a daily driver.

So far I have a smarty, AFE stage 2 intake, 4 inch exhaust. I have already ordered and am waiting for the arrival of my goerend triple disc TC and high pressure VB.

What would ya'll recommend? I was thinking about getting something to control my waste gate to get more boost up top. Does that sounds like the correct path for this?

Thanks again,
WR

pmtg · 07-27-2007, 04:45 PM

Quote:

Originally Posted by whiskeyrichard

I have only done a few modifications to my truck so far, and am very happy with the results.

The thing I want to work on now is the mid-top end power. The truck pulls real hard from the bottom, but it seems to fade is I get up around 2200 and higher. I find myself wanting it to shift sooner to get back in the power.

I use my truck to tow a pretty heavy trailer up long steep grades in the Sierra Nevadas, and also use it as a daily driver.

So far I have a smarty, AFE stage 2 intake, 4 inch exhaust. I have already ordered and am waiting for the arrival of my goerend triple disc TC and high pressure VB.

What would ya'll recommend? I was thinking about getting something to control my waste gate to get more boost up top. Does that sounds like the correct path for this?

Thanks again,
WR

you could try getting your boost to the ~35psi mark, but i dont believe it will be enough of an increase to satisfy you. but if youre boosting to 30psi in the Sierra Nevadas (not sure on their altitude) you could very well be overspeeding your turbo already and 35psi might not be a good idea.

but a fueling module that taps your VP wire and/or injectors will for sure give you the top end youre looking for. but it will be HOT.

the module can be turned off, the injectors cannot...which can be helpful when towing. just something to remember when making a decision...

whiskeyrichard · 07-27-2007, 05:01 PM

I already have to watch my EGT's, so anything that makes those go up, I should stay away from.

I have been towing with Smarty on #5.

WR

kelownadiesel · 07-27-2007, 05:36 PM

You can hit 1350 degrees with just a smarty?Is that empty or towing?Man I have never seen over 1300 with smarty on 8 and a drag comp on 5x5,but that is empty and I have a 5 speed too.Just wanted to add that that seems a little hot if empty.Oh ya get a boost elbow or j hook too

66fordcrewcab · 07-27-2007, 06:09 PM

The smarty is what is making your truck feel it has no power above 2200rpm. I think it starts to cut fueling back as you get in to the higher rpms. SOmething like an edge comp, edge ez would give you power all the way to 2700rpm or 3200 with the edge drag comp. That is way i sold my smarty was because the truck would not pull as hard above 2200 with the smarty as it would without.

whiskeyrichard · 07-28-2007, 03:58 PM

I can hit those temps when running the smarty with a load. Without a load I can keep them pretty low.

If what you say is true about the smarty, than the smarty does not work well for towing. If I am not in OD, when towing on the highway, my RPM's are always over 2 grand.

WR

66fordcrewcab · 07-28-2007, 07:22 PM

Like I said the smarty works great for low power they just need to work on the top end power then it would be a great all around programer.

qzilla · 07-29-2007, 12:25 AM

Do you want to tap the wire or keep the wire clean?

Two cost effective options that will both help are our new XZT+ box. It will help a bunch up top, does NOT tap the wire and is adjustable.

Or, our regular XZT box will also do the trick and is a fueling only box but, it taps the pump wire.

whiskeyrichard · 07-30-2007, 09:59 AM

My truck is under a DC warranty, so I need to be able to make it appear stock. That is why I went with the Smarty.

Would either of the products you mentioned allow me to easily return the truck to stock should I need to get it repaired at the dealer?

Thanks,
Wr

qzilla · 07-30-2007, 11:18 AM

The XZT+ is simple to remove and it will leave no traces as it does not tap the pump wire.

If you are worried about warranty that is what I would do.

Bob Wagner · 07-30-2007, 01:18 PM

Try out a set of RV275 injectors. better fuel economy and about 40 hp gain. very inexpensive too

whiskeyrichard · 07-30-2007, 04:21 PM

would the injectors you mentioned be good for towing? Are you thinking that these will increase power in the top of the range that I am looking for? Would they increase the EGT's in comparison to my current injectors?

Sorry for all the questions

WR

07-27-2007, 05:36 PM	#4
kelownadiesel Registered User Join Date: Mar 2006 Location: kelowna Posts: 520 My Photo Gallery My Classified Ads	You can hit 1350 degrees with just a smarty?Is that empty or towing?Man I have never seen over 1300 with smarty on 8 and a drag comp on 5x5,but that is empty and I have a 5 speed too.Just wanted to add that that seems a little hot if empty.Oh ya get a boost elbow or j hook too __________________ 01 3500 qc 4x4.Isspro guages,vulcan big line kit.Grandrock 6 inch mitres,edge drag comp,smarty,napa BHAF.5 speed 97 4x4 auto ext.0 plate,4 k kit.Dtt with billet flexplate and input shaft.Isspro,mbrp 4 inch

07-30-2007, 01:18 PM	#11
Bob Wagner Registered User Join Date: Apr 2002 Location: WA State Posts: 2,329 My Photo Gallery My Classified Ads	Try out a set of RV275 injectors. better fuel economy and about 40 hp gain. very inexpensive too __________________ 01 Don Mach4's-DODGEZILLA/14WG -Rips Allied 4 system -DTT 91% tranny (SWEET!)- AFE Intake-Darins DSS- Marco's Smarty ecm tuner 2009 Dodge Challenger SRT8

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07-27-2007, 05:01 PM	#3
whiskeyrichard Registered User Join Date: Jun 2007 Location: Sacramento, California Posts: 126 My Photo Gallery My Classified Ads	I already have to watch my EGT's, so anything that makes those go up, I should stay away from. I have been towing with Smarty on #5. WR

07-27-2007, 06:09 PM	#5
66fordcrewcab Registered User Join Date: Oct 2005 Location: Louisville Ky Posts: 66 My Photo Gallery My Classified Ads	The smarty is what is making your truck feel it has no power above 2200rpm. I think it starts to cut fueling back as you get in to the higher rpms. SOmething like an edge comp, edge ez would give you power all the way to 2700rpm or 3200 with the edge drag comp. That is way i sold my smarty was because the truck would not pull as hard above 2200 with the smarty as it would without. __________________ New truck 2006 2500 quad cab short bed mineral gray, auto, 4x4 with 53000 miles. 5in FBD exhaust, and Airdog 150 sitting on floor of the shop. Thanks to PDF diesel Performance. Old truck 2002 2500 H.O. Quad-Cab Short Bed.

07-28-2007, 03:58 PM	#6
whiskeyrichard Registered User Join Date: Jun 2007 Location: Sacramento, California Posts: 126 My Photo Gallery My Classified Ads	I can hit those temps when running the smarty with a load. Without a load I can keep them pretty low. If what you say is true about the smarty, than the smarty does not work well for towing. If I am not in OD, when towing on the highway, my RPM's are always over 2 grand. WR

07-28-2007, 07:22 PM	#7
66fordcrewcab Registered User Join Date: Oct 2005 Location: Louisville Ky Posts: 66 My Photo Gallery My Classified Ads	Like I said the smarty works great for low power they just need to work on the top end power then it would be a great all around programer.

07-29-2007, 12:25 AM	#8
qzilla Registered User Join Date: Jun 2003 Posts: 3,744 My Photo Gallery My Classified Ads	Do you want to tap the wire or keep the wire clean? Two cost effective options that will both help are our new XZT+ box. It will help a bunch up top, does NOT tap the wire and is adjustable. Or, our regular XZT box will also do the trick and is a fueling only box but, it taps the pump wire.

07-30-2007, 09:59 AM	#9
whiskeyrichard Registered User Join Date: Jun 2007 Location: Sacramento, California Posts: 126 My Photo Gallery My Classified Ads	My truck is under a DC warranty, so I need to be able to make it appear stock. That is why I went with the Smarty. Would either of the products you mentioned allow me to easily return the truck to stock should I need to get it repaired at the dealer? Thanks, Wr

07-30-2007, 11:18 AM	#10
qzilla Registered User Join Date: Jun 2003 Posts: 3,744 My Photo Gallery My Classified Ads	The XZT+ is simple to remove and it will leave no traces as it does not tap the pump wire. If you are worried about warranty that is what I would do.

07-30-2007, 04:21 PM	#12
whiskeyrichard Registered User Join Date: Jun 2007 Location: Sacramento, California Posts: 126 My Photo Gallery My Classified Ads	would the injectors you mentioned be good for towing? Are you thinking that these will increase power in the top of the range that I am looking for? Would they increase the EGT's in comparison to my current injectors? Sorry for all the questions WR