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Originally Posted by jeff983000gt
hey guys..i have a 98 3000gt sohc 12 valve motor..i have a full borla exhaust with downpipe and an injen intake.. i just had my heads port and polished..also..had my exhaust manifolds opened up as well as my intake manifold.. i upgraded to a 52 mm throttle body for more forced air..60 thousands was shaved off the heads increasing more compression..i also got a underdrive pulley...in the end i figure starting at 160 hp..i probly have around 210-220 hp..whats anyones opinion on upgrading to an MSD ignition? in the end im running better then a stock SL because with my compression ratio moved up to 10 instead of 8.9 i have less parts moving faster then the SL does..FINALLY A BASE MODEL 3000GT GETTING SOME POWER!!!
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Igo already tore you apart but I am going to continue.
#1 Borla MIGHT add 10hp tops at the crank. Thats more like 2 or 3 at the wheels.
#2 Downpipe can be a good solid 10 hp to the wheels.
#3 Injen intake, no power gained. On top of that you paid $170 for a piece of shit pipe that utilizes the stock elbow just because it had Injens name on it.
#4 Igo already informed you on teh port and polish. May have freed up some power but not what your thinking. Quit using Gran Turismo for power gains.
#5 Same thing as #4 on the exhaust manifolds. But no gain.
#6 The SOHC 3s came STOCK WITH A 54MM TB. End of STORY. Measure it. You downgraded.
#7 Even if you did raise the CR to 10:1 you are only looking at a max of 10 hp, IF THAT.
#8 There is NOT ONE underdrive pulley available for the SOHC. There is a lightweight and you may see 3 hp from it.
#9 Less parts moving than a DOHC makes you faster now. Buahahahahahahahahahahahahahahahahahahaha
Now you cant combine all those numbers and think you will see that sum as a total gain. You may have picked up a whopping 20 hp. You still arent in SL territory. Beating up on the ATX's doesnt count because I did that in my STOCK SOHC. Go race a MTX and get your ass handed to you. My car is far from stock now and I bet even with your mods I would still walk your ass.
And BTW you need to watch the attitude acting like know everything because OBVISOUSLY you dont know squat.