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Hey guys. I have seen the vitara's in d series handling quite abit of boost and have came acrossed a block my friend built and is willing to sell to me for cheap. Its a d15b with ycp vitara's and fjd i beam special length rods. I was wondering how much nitrous would you guys think these pstons...

Hey guys i have a D15B jdm vtec i recently rebuilt.. ported head, supertech valve springs and retainers, crower stage 2 cam, y8 aem cam gear, arp rod and head bolts, and basic bolt ons tuned on crome... and this is what happened after my retainer broke and i dropped a valve.... Now i am going...

hey guys i have quick question.... i have a great deal on brake pads but they say front brake pads with rear disc.... and i have drums in the rear... are there any differences in the fronts depending if you have rear discs or rear drums?

hey guys i am tearing down my motor to put new rings and bearings in it and i have a set of p28pistons laying around and i was wanting to know if there would be enough clearance for them cause i know the compression height on them are higher that the stock p08 pistons....... current setup...

I have a innovative lc-1 wideband and a 94 civic ex. I hooked the simulated o2 signal to d14. I have been reading around a some people say to pull the power and ground from the ecu and others say go to the battery. What place would be the most accurate. Also what is the ecu's voltage limits...

Hey guys I am having trouble with my speedometer and odometer not working. It happened when my altornator went out. I did not notice it went out because the light did not come on. Then all of a sudden I seen some smoke come from where my radio was and the car shut off. I blew D5 in my ECU in...

Hey guys I need a little help. I need to know what is a good catch can to go with and what would the best way to hook it up on a boosted d16z6. My friend has a z10 breather kit on his gsr but my block doesn't have the two holes in the back of the block:( like a b series. Thanks, Nick

I have a simple question for experienced tuners. About what afr do you want to run with nitrous and how much timing. Also would 13.5 afr and 30 degrees of timing be too much for all motor at wot with out nitrous. Also can you dattalog in second for all motor instead of third for street tuning...

Well I have a 94 civic ex coupe with the d16z6 with intake, crower stage 2 cam, zex valve springs, and the typical bolt ons; I did a compression test on it and two of my cylinders read 62 and 59 while the other two read 168 and 171. THe 2 that are low are cylinders number 1 and 3 with number 1...

I was wondering if 10.2:1 compression in a d16z6 is too much to boost with about 10 psi for a daily driver. I havent got the pistons yet because I wanted to make sure if I could boost on it. Thanks Nick

Hey guys I cant figure out what is wrong with my car. It is running extremely rich, so rich that my plugs are black after about two or three days on them. Also my car wont idle at all. It is like it floods its self out. What would cause my car to run so rich. My car is a 94 civic ex with...

I have a 94 civic ex and i was checking my radiator fluid today and when i took the cap off there was some black residue on the cap/radiator and in my over flow tank. What could this be. The black stuff is a solid build up too. Could this be head gasket material? thanks, Nick

i am looking for a iacv valve and i was wondering which ones would fit my car. My car is a 94 civic ex with the d16z6. thanks, nick

The other day when i start my car it had a jumping idle. I figured it was the iacv but there was no cel. When i checked for codes i got 14, 21, 22. My questions are is why doesn't it turn the cel light on to let you know something went wrong with the engine and also when the iacv goes out...

I have decided to get some new valve springs for my d16z6. I was wondering if I have to get TI retainers to go along with aftermarket valve springs. Also can you guys give me some advice on what brand to go with too. Thanks, Nick.

my friend has a 00 SI and it has a b18c1 and how do you tell the difference between the usdm and the jdm b18c1. People been trying to say that if it was a jdm it woild just be b18c with no number after it and the motor is stamped with b18c1.

I was reading in the reference material and it said that my ecu should have a revlimit at 7600rpm. My car hits revlimit at 6500 rpm. I have no cel or nothing. My car is a 94 civic with the d16z6 and it run fine. I was just wandering if my car is messed up or is that the stock revlimit.

I was wandering if the evo VIII turbo would be a good match to my d series motor. I am looking for around 300 hp. I have rods and 9.5:1 pistons to go with it. Also if it is a decent match would a t3/t4 flange work? If I need a special flange can you guys refer me to a place where I could get...

I just put in some 5w30 quakerstate advanced sythetic motor oil and my vtec is not kicking in. I was just wanting to get some suggestions on what motor oil I should use. Thanks

is it better to run stiffer spring in the rear or the opposite. What spring rate is good for street use. Like 6K front/4K rear ect. ect.