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Troubleshooting & Technical Questions & ModificationsHave technical or modification questions about the Crossfire?
Find out the answer, or give advice in here!
Been lurking on here for a few years for quick tech help and its been an great help. Quick of what we have is an 05 srt6 vertt bought a few years ago for my wife in an estate sell for cheap. It looked to be use as a drag race car, wide 15" wheel , dual exhaust pipes no muff ect. Took me some time to get it running again and when did it was loud as hell. To make it pass Ca smog i installed all 4 cats and installed an flowmaster dual in & out muff and its still on the loud side but wife likes it that way. The engine looked stock to me but thanks to this site i now know it has an 178mm pulley, sl55 cai, sl55 pump, blue bosh injectors. After we got it smogged and regestered it ran stronger that i we expected but it was a gas pig when use got on it and it seamed to lay down on the top end. That got me thinking it might of been tuned for race fuel and not ca 91 so i put an 50% mix e85 91 and it helped a little, then 40% it liked that better, then 30% and it can alive and have been driving it that way for a few years and it been fun as it can keep up for beat just about any street. It walks my n54 335is fbo e60 in an 1/4 dig but at an 60mph pull there about dead even with a slight nod to the n54 at very high speed. Anyway it got away from my wife and took out the oil pan sump so i have to replace it and do some minor body and paint to the front bumper so since it going in to the shop we decided to install an 65mm blower pulley and try to tune it for straight e85 or atleast e60 like my n54 as going from e30 to e60 woke my n54 up. Any help on what worked or did now work will be greatly appreciated.
Ok just received the blower pulley the all steel one and it looks to be of good quailty. I also ordered another s55 fuel pump & fillter so I hope I can run 2 pumps side by side like I have done on my n54. Also forgot to tell you the car has an limited slip diff and seems on the low gear side about 3.55 or 3.6 rp. We installed 20" wheels in the rear to help. I believe the traction control is not hooked up or dose not work. Also thinking of ordering 660cc injectors from Five O but not sure yet.
Hello amx1397 Will see if wife is ok with giving the vin number on the web she is funny about things like that. Anyway your crossfire is truly fast at mid 10s @130 and your 60s # are good. We have not tracked her car only street fun but if I had to guess it would put down low 12 with traction @ 115+- as we have a friend with an 18 Mustang gt he has set up for 1/4 mile and our cars are very close from a dig but i belive the srt6 would take the win light but be down a few mph. Hopefully with the smaller blower pulley, more e85 and few degs of timing i can find 40 to 50 more lbf
Hello amx1397 Will see if wife is ok with giving the vin number on the web she is funny about things like that. Anyway your crossfire is truly fast at mid 10s @130 and your 60s # are good. We have not tracked her car only street fun but if I had to guess it would put down low 12 with traction @ 115+- as we have a friend with an 18 Mustang gt he has set up for 1/4 mile and our cars are very close from a dig but i belive the srt6 would take the win light but be down a few mph. Hopefully with the smaller blower pulley, more e85 and few degs of timing i can find 40 to 50 more lbf
OR, you can check the latest updated listing of the VIN numbers maintained here in the forum. If it is there, you can say yes or no, or confirm which one it is without giving your personal information. The membership builds a list of VIN numbers for statistical reference as there are so few of them.
Ok that sound good as she would like to know how many others are still on the road. Sorry we are not computer people so where do we do the vin search ? Also here is pic of my wife and her srt6. As you can tell she likes it allot. When she has to drive the 335is she calls it the black pig
to use E-85 make sure your injecters seal , fuel pump,,rubber hoses in otherwords the stock crossfire can only ( safely ) run e- 85
at 40 to 50 % due to seals and rubber ,, I have run 45% with no problems,, also research all you can on running e 85, friends have 100% e85 in their srt-4 mustang, and hemi charger,, with no problems, they told me about once a month they get the tank as low as they can and they use 100 oct gas.
so go for it,,, just in case you are interested i am working on a 3.90 diff for the crossfire the problem right now is a wavetrac for them we have two going into crossfires soon,, would love to install one into a limited ,,, it would be like adding 45 to 55 HP
to use E-85 make sure your injecters seal , fuel pump,,rubber hoses in otherwords the stock crossfire can only ( safely ) run e- 85
at 40 to 50 % due to seals and rubber ,, I have run 45% with no problems,, also research all you can on running e 85, friends have 100% e85 in their srt-4 mustang, and hemi charger,, with no problems, they told me about once a month they get the tank as low as they can and they use 100 oct gas.
so go for it,,, just in case you are interested i am working on a 3.90 diff for the crossfire the problem right now is a wavetrac for them we have two going into crossfires soon,, would love to install one into a limited ,,, it would be like adding 45 to 55 HP
Thanks, We found it was already on here but had no other info just the color and r for roadster. looked a little more into the rear gear and its close to 3.3 to 1 as at 80 its turning 3200 with about a 26" dia tire. Still waiting on five O input on injector size. Also thinking of injection 100% alc into blower intake only at high boost and rpm.
Ok i finally got it al up and running again but what fun it was not. The supercharger steel pulley from poland looks to be good quailty but when i installed it i had almost 1/8" clutch gap so i removed all the shims and still had way to much gap 1/16" so i removed the pulley bearing and made a custom shim and installed it but now i had .008esh to tight. Since it had been powder painted i lapped sanded off the paint to bare steel tell i got .010esh. Now started the 660 injector install and what a big mess that tuned into. Pulled the intake plenum tops off to see an very ugly mess inside. Looks like 10 year old dries thick peanet butter so that took and unexpected turn. My guess is at one time the inner cooler leaked and must of been ran that way for some time but in the time we have owned it it has not lost coolant. So now its off with the blower to clean / dig out the intake ports and upper manifold parts no fun at all. Decided to install new plugs as a had 1 step colder plugs and went 1 step HOTTER for E60 and gapped them at .35 ( Just a guess at what i thougth would work best. Installed the blower , 660 injectors with the new O rings ect. Filled the tank with E85 and it fired right up but very rich but after running it steady at 3000 rpm for about 5 min it got much better but idle was still to rich. From 1500 up it was more responsive so i took it for a spin to get the blower pulley to engaged and that worked very well. I also wanted to see if i had belt slip so i pulled over to take a look and when i opened the hood i smelled fuel so and saw what looked like damp spots on all the injectors at the head side but they where not leaking then ( probally from boost . Pulled all the injectors and noticed the new O rings had a slightly larger id the the old ones so since they where in good condition i used them and that fixed the leaks. Back on the road again and wow its has more power every where and when the blower engages it pulls hard all the way to 6k but then lays down. So thinking i am running out of fuel at top end i mixed 4 gal of 91 in the tank and also decided to replace the fuel fillters. Now on E60 esh 8 gal e85 4 gal 91 mix its now running very smooth even at idell and pulls hard all they way to 6400 6500. Very happy with it so far but i an worried about blower temp and been thinking about ways to cure that. Thinking of installing an 7th & 8th injector into the blower intake right after the TB by T ing off the stock fuel rail and use some cheap Dc to Dc driver tied to 2 injectors with a simple hob switch's per injector. 1st hob set around 12lbs 2nd around 16lbs. Still do not know if it has a stock ecu but talked EC and after talking to them i belive it is not stock as he asked me it it popped and banged allot and it did when we first got it running. EC told me they do not have a tune for E85 or any mix but recommended there 109 tune. Ok at $700 and i probally already have a tune close to that i will need to think on that. Does anyone here know if there is a way to check if the ecu has been tuned and if so what has been done ?
Ok and thanks Zip. That is good to know. Never taken it up that high but close playing with one of those new Mclaren 550s spiders. He was totally beside himself as we where side by side on top end till i shut down at 150 esh. Even walked him from 60 to 90 3 times and he way the agresser so i had to play
Been thinking about that 165 limit. I know this sounds a little crazy but thinking of putting the car up on my lift and strapping it down to the arms plus removing the rear tire and see.
The limit is set at factory at 155. Thus if you make 165 you have a tune.
I don't think the lift thing will work as the front wheels are not moving and ESP, Traction Control will activate?
The work around to that would be to disconnect the Traction Control, ESP main 50 amp fuse in the small black plastic box just in front of the car's battery.
Is there a dyno anywhere near?
Wow i was close to finding that limit out. Yes i have a friend who is a modern Mopar guru. I talked to him already but he has never done a crossfire but is willing to try to do a tune. He asked me to find out any info i can before i bring it over. He is beyond busy tuning these new supercharger Mopars so it will be hard to get a spot
Once you get the E85 set where you are happy with performance, please lets us know what mpg you get. The standard differential on the SRT6 is 3.03 and you feel yours may be a bit higher, non the less I would be interested in what you are getting on the street. My Limited can do 30+ cruising at 70mph and the SRT6 is down around 27 mpg.
Once you get the E85 set where you are happy with performance, please lets us know what mpg you get. The standard differential on the SRT6 is 3.03 and you feel yours may be a bit higher, non the less I would be interested in what you are getting on the street. My Limited can do 30+ cruising at 70mph and the SRT6 is down around 27 mpg.
Zip lets correct your info,, stock diff gears on the srt is 3.07,,the limited is 3.27 the mpg in reality is, srt at best 26 to 27 , limited i don't know never owned one, now my c320 wagon with about 50% e-85 gets 24 mpg ,,wagon has same weight, same engine, same rear. as limited with out e-85 it gets 27 at 80 on flat hwy like fl or tex.. my v8 gets 25, cruising ,of course . Not stepping on toes just letting u know what i know jim
100% E85 to 91 blends what can work
OR, you can check the latest updated listing of the VIN numbers maintained here in the forum. If it is there, you can say yes or no, or confirm which one it is without giving your personal information. The membership builds a list of VIN numbers for statistical reference as there are so few of them. 
