hello everyone,


I have a 1985 tpi 305 camaro with holley hp efi kit 550-601 . my ? is the cam is degree at 36 btdc and i need my distributor to be in sync with my holley hp efi but the crank timing only goes to 30 degrees thanks for the help



miles

 

Did you figure it out?

 

naw we still fooling around with it. we got 2 more Camaros we are working on and haven't messed with it much lately. we got it running but having issues with idle. we are fixing to get back on it and see what we need to do. its gota 488 rear gear kinda hard to drive it to learn anything. we are planning to run ihra pure stock class. the whole drivetrain is new and having hard time getting it all in sync.

 

call holley their tech support is very helpfull I cant help you in your situation but I use the holey systems in all of my cars but they are all LS motors

 

Thanks for the input. We got 3 third gens and of late added 2 LS cars to the stable. We have gotten side tracked on 1 of those getting it ready for drag radials. Put my TPI car on back burner for a while. Hopefully fixing get back on it. From what I have gathered the Holley HP EFI seems to be fairly simple for LS cars. Not so for my TPI setup anyway thanks for the hit.

 

ive done 5 motor swaps with the HP system and will be running the dominator in my car and I am very pleased but one car we had an issue with and could not figure it out and still havent but the more we did the worse it ran until I said F*** it and started the tune all over from scratch and then the car ran perfect ??? the self tuning is amazing for the fuel tables you can be so far off on the base on the first start and just import the learn table and hear the car run better every time

Im curently doing two cars mine with the dominator and a HP both turbo setups with their boost control

 

I can understand that, got mine back in May cranked car ran cam in everything went pretty ok started trying to get things zeroed in car had rough idle, surging, put in gear cut off, get it on street hit it from dead would get up to around 4500 and die, take foot off gas start back running, you name it, it would happen. Put it in back of shop and let it rest we gota 87 hardtop car running in I/SA trying some different combinations on it and in mean time gota super deal on a 00 Z28 and have been working on it, trans and converter was broke, so we got idle time waiting for tires for Z got TPI car back out did same as you wiped program out started over from scratch changing very little, started it- busted right off ran really good thought we had made gains, cut it off walked away for about a week, started it again went to running pretty much like it did on 1st tune. That's where we are at now. Taking a break from it probably mess with it over the holidays. I haven't given up on it BUT it has been a real head scratcher.

 

I kinda sounds like the valves may be out of ajustment also I found a chart somewhere that converted your injectors ex running a 45lb injector at 55 psi is like having a 58lb injector we kinda did it by the seat of our pants and guessing but changing the injector value made big differences by going larger and smaller than what was in there.


How long has the car sat or how old is the fuel the 10% ethanol looses a little over 1 octane a month of sitting and gells up with any moisture clogging pumps filters and injectors

 

just out of curiosity where do u have the wide band tied in? Is it on one header or after the y pipe. Are u watching the afr when it acts up? I'm curious if it could be an injector or two acting up and the Holley is struggling to adjust?? Just an idea if its acting up over that large of a range from idle to 4,500?¿?

 

we are running headman long tube headers cut the original collector off put a set of flowmaster 4 into 2 into 1 collectors, mounted bung on drive header into collector at point right after the 2 tubes go into 1 at about a 2 o'clock position. We have noticed sensor takes a little longer to heat up than what start up instructions call for but after running afr in limits. We may have hurt it running cam in. We've started with 22lb injectors had problems running rich went to 19lb injectors didn't wanta run at all with them. now have a set of new bosch 24lb injectors no more rich condition. had tank off changed to a walbro fuel pump running 100 octane and 93 octane 50/50. new filters everything is new or has been inspected and cleaned.

 

Did u run in a hydraulic cam or are you running an older block? I'm assuming you converted from maf to be using the 550-601 kit? Are you still running the factory fuel pressure regulator and are you monitoring fuel pressure?

 

I just got my holley efi running and think I figured out how to sync. I used an advanced timing gun with the dial where I could change the light's timing. I was on the laptop pulled back my idle timing went to the gauge live screen seen what the computer thought the timing and turned the distributer till the timing they matched. Then I increased my rpm to about 3500 and checked and they still matched.

I think holley wants you to turn over the motor by the starter with injectors unplugged to set the timing but I don't see why my idea would be off

 

Thanks for the reply yea we had timing in sync we did same as you. Hadn't messed with it till last week still no luck. Took it to RPM up in Garner NC today. O2 was fried had put it on dyno we needed more fuel pressure for injectors, was at 43 had go up to 53. Guess should have taken it sooner kept thinking we could figure it out kinda thought O2 was hurt anyway and it was. Those guys are worth the drive pretty sharp on EFI and tuning. Going order new sensor in morning hopefully might be able run it Sun. Anyway thanks again for the reply.

 

Another thing I figured out go under your idle setting, tab idle parameters, under idle spark the check box ENABLE uncheck that while u try to sync the timing and it will stop the ecu from chasing the timing and make it easier. which mine is within a degree or two might redo it tomorrow. I just got mine running and im learning as I go too.

How good is RPM I'm within driving distance I'm trying to work my new engine bugs out N/A then put the SC on. Then I wanna dyno and tune. Do they know Holley EFI good?

 

Yes I'm really pleased with what they did for me. My cam has right much overlap, it was giving us fits. We were running fuel pressure @ 43.5 had take it up to 53 with 28lb injectors. Timing set @ 36 degrees he tried move it both ways. It didn't like it gota stay @ 36 degrees. Mine was 4th Holley hp they have done and 1st TPI they have done. They can tune anything if its gota wideband. Yes them boys are sharp and they are friendly and will answer anything you ask them. They gota Trans Am they run in X275 their car ain't quick its sudden. There on Facebook and they gota web site check them out if you call ask to speak to Martin or Ryan. They can take all guess work out of it for you and get it up and going. It was a pain just trying get mine loaded on the trailer and now we ready for Saturday night. If you need know any more let me know glad I can help.

 

Ill probably buy an extra wide band just incase mines missed up . I know I've dump alot of extra fuel trying to get it right I don't know how much abuse it takes to damage on of these 02 sensors.

About how much do they charge to dyno and tune?
Do they let u see what they adjust or are they kinda secretive?

 

The dyno and tune runs 125 bucks an hr. They use DYNO JET system, they set you up for 4hr appointments. Mine was a complete mess took him 3hrs on my tune he didn't dick around he stayed right on it. It just depends how close your car is to running like its suppose to. Mine was over in left field. Yea you can go back and check on it I went a few times but I didn't want bother him cause my car was on his clock. Naw like I said earlier the guys don't act like ****** they answer anything you ask. I talked to Martin a long time about an LS1 Z28 we got last summer. He told me a couple of things that will pick it up and not have to spend a pile of money. They have been tuning for a long time they haven't just started tuning. They even tune a couple pro mod cars. I really didn't know much about them but seen lot there cars run and they run good so I took a chance rode up last Monday talked to them and he said he could help me. I got an appointment for yesterday. Turns out its the best move I've made in a long time. When I left they told me go try it first chance I got anything needed tweeking bring it back they would get it right. Someone wants know about I tell them RPM from now on. They are right beside I 40 and about 15 miles off I 95 real easy to find. When he tunes your car if something happens he saves all his tunes and he can email you a copy if you need it. Its little pricey but we messed with it for almost a year off and on, I cranked it this evening went down road little ways when I got back I had already forgotten about spending the money. I think I will get a good nights sleep tonight. that car has about worried me sick but its running like it supposed to now.