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Showing results for tags 'tuning'.
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I have been having so many issues tuning my triple OER/SK dcoe 40 carbs. I recently bought these carbs secondhand. I have been running into issues with idle speed, and synchronizing. The car runs very rough and the engine shakes quite a bit. Problem #1 I attempted to synchronize all three of the carbs but ran into many issues. The carb (#2) in the middle seems to be drawing in a lot of air compared to the carb (#1) and carb (#3). This is with all the carbs set to the same idle speed screw distances. I suspect that carb #2 has a bent throttle shaft or butterfly, but the butterfly opens smoothly with no obstructions. I also checked for vacuum leaks and there doesn't seem to be any. Problem #2 When I put the synchronize tool onto any of the carbs the idle drops and the carb drools fuel everywhere, like a toddler drooling. I am not sure if that is normal or not. Every carb seems to do that when I hold the tool up to the throat. Also when I hold up the sync tool to carb#2 the engine almost dies out. Desperately, trying to find a solution I have to increase the idle speed of #1 and #3 in order to match the flow of #2. This resulted in a super high idle speed of about 2000rpm. Problem #3 Carb #2 seems to also be running much leaner than the others. I had to turn the idle mixture screws a few more turns than #1 and #3. please any advice is welcome.
Hi guys, This fuel injection stuff is new to me... I'm trying to get my car's fuel injection/computer checked out before Ocean City Maryland cruise weekend this weekend but I'm about out of time. The car runs ok but it's not 100% and I want to at least have it checked out. The motor is a stock 99' firebird LS1 and the previous owner gave me his Diablosport Intune. I tried to mess with it a weekend ago but didn't really get into it. I spoke to a local shop Friday and apparently a newer guy answered the phone and said they could plug it in and check out it. I get there today and he's not there and the owner tells me it's not that simple, says they sell diablosport but they don't really tune them, more into HP and SCT (Brands I guess). He says if I know the computer's serial number that helps and they'd need three days to get a new map built. I don't know if I need all that right now but just wanted it to get checked out. I couldn't find my Intune tuner before I went there which didn't friggin help but then of course I found it immediately when I got home. I think I'm going to try and mess with the tuner myself again. It looks like you can do a ton of stuff with it but it was a little hard with the small screen. I immediately hit an acronym I didn't understand last time i messed with it and I only have a quick start guide, I'm going to get in touch with Diablosport soon and see if there is a glossary or more detailed instruction manual and ask them if they know any shops that actually tune rather than just sell their product. Does anyone have any Diablosport experience or know any shops in Maryland that might be able to help me out? Either way I'll post any progress I make. Take care fellas. P.S additional reading if you want. My fuel injection experience is limited to my 2010 Ducati Hypermotard 796. Years ago I installed a full exhaust on it and purchased a Bazazz piggy style back ecu for it (like a power commander). Well that turned into a crapshoot. The Bazazz units apparently don't talk well with the stock Siemens computers on those bike's, I needed to get my ECU reflashed for it to work together which is what I thought I was avoiding. A new fully tunable dedicated ECU is twice the price which is why the piggy-backs are attractive but after reflashing the ecu and you're spending the same money anyways so I screwed myself. I went back and forth with my shop and Bazazz and got annoyed with Bazazz and ended up telling the shop (Ducpond) to pull off my tuner and send the stock ECU to Redline in Virginia to get a flash and dedicated map installed on it for a similar exhaust, the bike has run pretty well ever since. Anyways I don't think or don't know if I'm in a similar situation to my Datsun's ls1 right now. Why does it matter if I go somewhere who can or can tune Diablsosport stuff. Is it something with the car's OBD port that's now proprietary to the Diablosport tuner? I thought any shop would be able to plug into my car and check out the fuel injection. I'm a bit confused obviously but I'll learn this stuff soon here.
Hello, Can anyone smarter than me take a look at this tune and tell me what is wrong with it for my build. I have a pretty much stock 82 l28et stock injectors DIY wiring harness i put together. iac sensor 240sx 65mm throttle body and tps DIY trigger wheel single coil lc2 wideband (not wired to ms2) walbro 255 lph inline fuel pump no other sensors are connected to the MS2 Ive been messing around with some other peoples tunes and came up with this. This started the previously warm car yesterday and i set my timing on the car with this project. its set to around 19 btdc because it was running so rough. The car was running very rich and was backfiring with every change in throttle. i assume the ignition settings might be wrong and the fuel map is too rich. ive scaled down the fuel map and it didnt seem to change much at all. could their possibly be other more hidden settings that i also have to change. Today i tried to start it and it just kept flooding itself no matter what spark settings i change or if i scale down the fuel map. Im new to this type of stuff so any help is apreciated. ive been researching so much and tried so many things but nothing is working. thankyou.