Hey all,
I've been trying to research and search the forum before posting but I'm honestly stumped. Here's the situation.
1992 FJ80 1HD-T 12V motor with stock turbo, been over fueling since I bought the rig- previous owner said he wanted it tuned to "roll coal" aka over fuel. Running 8 psi and I find when boost kicks in around 1800 rpm the EGTs rise aggressively with not much power to show for it. I'm up to 1400F pre turbo before I even hit 100 kph. This would be at I'd say 3/4 throttle. I'm slowing to 60 on hills to even keep it below 1200. Here is my setup, and all the things I have tried as per the awesome info I've gotten on the forum.
Safari Snorkel intake, brand new air filter changed with less than 50 kms on it. Stock turbo, HPD top mount intercooler with electric fan, 3" custom exhaust. Boost comes in at around 1800 rpm, holds 8 psi steady. So far I have done the following:
Intercooler/hood scoop installed, I've dialed back the fuel 1/8 a turn, installed a manual boost controller, upped the boost to 14 psi.
So now, the EGT's are slightly slower to rise and cooler (maybe a couple hundred degrees), and at 80 kph I'm sitting at around 900, but when I really accelerate and the boost comes in, I'm up to 14 psi, and the EGTs are still rising quickly. As my gearbox shifts (Automatic) into 3rd I get the over boost light come on, and again the EGTs are up to 1400F. I can't even get to 110. After I adjusted the fuel mixture it seems all it did was lower my idle to around 600. Which is low, I know stock on an automatic needs to be around 850. Big black smoke clouds at initial acceleration as well.
So I'm stumped! my next ideas are to clean the injectors, adjust the fuel rod and the boost compensation spring, but I'm somewhat at a loss. Any input or help would be really appreciated.
I've been trying to research and search the forum before posting but I'm honestly stumped. Here's the situation.
1992 FJ80 1HD-T 12V motor with stock turbo, been over fueling since I bought the rig- previous owner said he wanted it tuned to "roll coal" aka over fuel. Running 8 psi and I find when boost kicks in around 1800 rpm the EGTs rise aggressively with not much power to show for it. I'm up to 1400F pre turbo before I even hit 100 kph. This would be at I'd say 3/4 throttle. I'm slowing to 60 on hills to even keep it below 1200. Here is my setup, and all the things I have tried as per the awesome info I've gotten on the forum.
Safari Snorkel intake, brand new air filter changed with less than 50 kms on it. Stock turbo, HPD top mount intercooler with electric fan, 3" custom exhaust. Boost comes in at around 1800 rpm, holds 8 psi steady. So far I have done the following:
Intercooler/hood scoop installed, I've dialed back the fuel 1/8 a turn, installed a manual boost controller, upped the boost to 14 psi.
So now, the EGT's are slightly slower to rise and cooler (maybe a couple hundred degrees), and at 80 kph I'm sitting at around 900, but when I really accelerate and the boost comes in, I'm up to 14 psi, and the EGTs are still rising quickly. As my gearbox shifts (Automatic) into 3rd I get the over boost light come on, and again the EGTs are up to 1400F. I can't even get to 110. After I adjusted the fuel mixture it seems all it did was lower my idle to around 600. Which is low, I know stock on an automatic needs to be around 850. Big black smoke clouds at initial acceleration as well.
So I'm stumped! my next ideas are to clean the injectors, adjust the fuel rod and the boost compensation spring, but I'm somewhat at a loss. Any input or help would be really appreciated.