Interceptor Status 09-07-09

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Big Swole

Big Swole

MegaInterceptor
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Jun 28, 2007
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Well, the trucks back together and running....Ty and I worked OVERtime this weekend to get our trucks running...Unfortunately for Ty he ran into a snag but hopes to be up and going for the Race Sat. 12th

First off, I still feel (by seat-o-pants meter) that I am still down on Power by quite a bit....As far as I am concerned, there is NO real reason this should be happening... Was in the 11.50 at 118 range and ever since then, my trucks been consistant 12.00's at around 112......That calculates 100 hp loss....:bang

Things done this go round:

Fuel press. reg. installed and set at 10-11 psi of Inlet pressure ( was hoping to cure my high RP at Idle and the Loping it causes....I seem to still have it but its very intermiten....So weird. Some times it fines and RP seems normal and then I'll crank it the next time and get 10-13K psi at idle....:bang

Injectors were tested by Garmon ( Watch this video from Garmons new machine...not my injectors though)
CR injector at work - Car Videos on StreetFire


I had 5 that were (seemed) to be working fine...Delivering 18+ and only returning 3-4.......Had one that delivered 18 but returned 10+....We changed that body and retested.....Got all 6 within spec now...

BTW, my old numbers at the track (11.47@118) was Only with the Flux 3.3's...Don upsized mine to 3.8's this last time.....So I'd think the power should be up a bit just from that....It just doesn't feel like it....

I re-lapped my valves myself by hand so the valves should be sealing well....I didn't see any cracks in the seats and none were loose....

My compression test a while back was good too.....

Installed the ARP 625's....Did a warm up and cool down and then did a good re-torque....Stock 24v gasket with my O-rings....

Piston tops looked good with a good spray pattern...(Will try and post pics later).....Don did take a bit of metal off of the injector collar for me to lower my tips down a bit into the bowl, since my pistons are cut so much...

The only thing that I haven't tested or changed out yet is my FCA's but I may have some on the way to swap and test from John at Floor It.....But like he said, they may be causing my high RP at Idle issue but he doesn't think it has ANYthing to do with my total HP loss.......Is there ANYWAY that the FCA's can cause a WOT HP loss??????

OH....Small stuff that's changed that Shouldn't hurt hp, only help it......I went to a Full 5" turbo back Silverline Exhaust!!! When I ran the 11.47 on fuel only, I was still running my 4" from the bottom of the 5" down pipe....( The original power loss was still with the 4" on the truck )

Jeff's got an ECM thats off of an 04.5 truck that he had to do a transplant in....I may try it sometime soon just to see if maybe that is what it is....


ANY other suggestions or comments on this ?????

I'll know for sure after this weekend at Reynolds as to my track times and HP using the hp calculator......I'll keep you posted!!!!
I HATE not getting every HP that I Paid for and spent Major time trying to get back!!!!!!:bang
 
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Glad to hear you are back up running again. The little things can be worked out in time. I wish I could be joining ya'll in Reynolds but I don't see any way to get off work. This will be the first one I've missed.
Billy
 
Billyram said:
Glad to hear you are back up running again. The little things can be worked out in time. I wish I could be joining ya'll in Reynolds but I don't see any way to get off work. This will be the first one I've missed.
Billy
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DANG man!! I was sure hoping you could make it Billy....

Won't be the same without ya!!

Keep trying!!!!!!

:Cheer:
 
it would be worth swapping in 2 known good fca's just for the hell of it.

same goes for sensors.
 
well i will let you know this i bought my 04.5 back in june and it had a 5" on it at the time and when i sold that and went back to my 4" duals my power seemed to go up and the turbo was more responsive.
 
David, If you have access to a good scanner that could tell you if a few things arnt working correctly
 
jlibert said:
it would be worth swapping in 2 known good fca's just for the hell of it.

same goes for sensors.
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Yeah, def. gonna try the FCA's....I think John's gonna swap me out a couple....

Swapping sensors is a good idea as well.....MAP and what else?
RP sensors seems to be reading correct on my guage for total psi and the range within....
 
SKYNYRD said:
well i will let you know this i bought my 04.5 back in june and it had a 5" on it at the time and when i sold that and went back to my 4" duals my power seemed to go up and the turbo was more responsive.
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I'm with ya on the whole response things but for all out WOT performance, the 5" should be better.....But like I said, the major power loss was Before the exhaust change......

Not sure any exhaust would cause a 100 hp gain or loss....Unless it was off of a civic Hybrid or something (loss wise) LOL

Thanks though
 
Big Swole are you sure your power loss is a engine problem? You sure your TC or tranny is not hurt. I know it's a Garmon but anything can be hurt, with the kind of power your making.
 
aircop said:
Big Swole are you sure your power loss is a engine problem? You sure your TC or tranny is not hurt. I know it's a Garmon but anything can be hurt, with the kind of power your making.
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Im confident that it's not....When I originally broke the Billet Input shaft , we pulled everything apart and it all looked really good...Jeff even updated my VB with a few new tricks....Only thing that we didn't do is cut open the convertor and do a refresh. But it seems fine too!!

Even after several street miles and a few passes at the track, we dumped all the fluid to look at it....Clean as could be!! I'f I was slipping lock up, there'd be some trash...

The thing just used to freakin Scream and do 45-50 roll on burnouts..Now its still fast a chit but just not the same...


I guess I'll try all the other electronic options!!
Sensors, FCA's, ECM, and what ever else.....

The Ghost in the machine!!!!! :bang
 
so are you saying it ran better with the smaller injectors? If so go back to the smaller injectors i have seen many times where less fuel increases horsepower its just all about how the truck is setup and we all know every truck is a different animal.
 
FCA's, Sensors, ECM reflash/replacement. In that order would be my list of possible replacement items.

Yes FCA's can cause power loss, debris keeping the FCA from opening up completely can do this, and the same on the low end, debris keeping the FCA from closeing will alter idle RP.
 
I'd change out the rail sensor first, + its like 30 seconds to swap it.... your showing 26-27k with the foot mashed right? You've got flow, if your pressure's up, BUT is the pressure really were the ecm thinks it is?

I'm sure its in the rail - fca circuit, that high rail at idle has to be screwing with the ecm.

However, did it always do that, even when you were at the 800+?
 
Joesixpack said:
I'd change out the rail sensor first, + its like 30 seconds to swap it.... your showing 26-27k with the foot mashed right? You've got flow, if your pressure's up, BUT is the pressure really were the ecm thinks it is?

I'm sure its in the rail - fca circuit, that high rail at idle has to be screwing with the ecm.

However, did it always do that, even when you were at the 800+?
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You ever get to do that pulse width test?
 
grncummins said:
so are you saying it ran better with the smaller injectors? If so go back to the smaller injectors i have seen many times where less fuel increases horsepower its just all about how the truck is setup and we all know every truck is a different animal.
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Wished that was it...But, the original power loss was with the 3.3's....now have 3.8's

Thanks for the reply though..
 
Extreme Engines said:
FCA's, Sensors, ECM reflash/replacement. In that order would be my list of possible replacement items.

Yes FCA's can cause power loss, debris keeping the FCA from opening up completely can do this, and the same on the low end, debris keeping the FCA from closeing will alter idle RP.
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Thank you for the proper order !!! That's what I'll do....

:Cheer:
 
Joesixpack said:
I'd change out the rail sensor first, + its like 30 seconds to swap it.... your showing 26-27k with the foot mashed right? You've got flow, if your pressure's up, BUT is the pressure really were the ecm thinks it is?

I'm sure its in the rail - fca circuit, that high rail at idle has to be screwing with the ecm.

However, did it always do that, even when you were at the 800+?
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FCA's are in the works to try, so I'll keep them comin...

Yes, with the MP8 up the RP is 26-27K at WOT

If I remember correctly, the Power Loss was directly around the time I started noticing the High Idle RP.....So your probably right about it being electronic somewhere....

Thanks man!!
 
HIGH TECH RAM said:
You ever get to do that pulse width test?
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The scope should be here tomorow, broke the transmission friday.....:bang that input is damn tiny....who are we kidding...:bang

I'll scope it at idle for kicks and post it. Do it right when I put the transmission back in. Got a Eaton fuller 18 speed I think I can shoe horn in. LOL
 
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