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it all depends on the sizing. A bigger pipe will slow velocity down but have low backpressure which is good for high power but will kill torque due to the low velocity at low rpms. A smaller pipe is reverse of that it will have more backpressure which is not good but a higher velocity that...

dynomax race bullet (s) for rumble magnaflow or hooker max flow for mild tone all 3 of these are strait thru mufflers which help keep the velocity up a basic baffled muffler will decompress gases to recompres the gases to exit the muffler again. this and the effect the baffles have is...

theres going to be very little difference

not reall yalot of boost only 8-9 psi is what the gates are set for. Its just a stock PI motor. The turbochargers have tiny housings which will if my caluclations are correct spool very quickly. I already had been pushing 8 psi thru the motor but that was with a tiny ineffecient turbo. Someday...

Not an explorer but heres what my 4.6 is being attached too

a degreaser and a wire brush work well

the 4.0 upper and lower actually arent restricted at all. Just check for any casting flash

i got lucky it was only a hg. igf you have a leak it can be a gasket or a crack you woulnt know until you dig in. i havent adjusted timing. im keeping the boost down to 5psi and leaving the controller alone. I did thropw in some bigger fuel injectors. it has a little bit of a choppy idle and not...

actually the line up started with a 1.2-1.3-1.5-1.7 V4 that was also actually turbocharged at one point then two cylinders were added to 2.8 then bored and many other changes to 2.9 then decked and stroked to 4.0 check it out when it only had 4 cylinders http://www.cardomain.com/ride/2114959...

I agree with the whole trying to go NA route. building a good torque monster of a 4.0 is possible but costs alot. If you want more power i would really recomend forced induction since the factory internals are strong to begin with

i think that the hooker max flow sounds the best for a 4.0 good sound and not too loud. Also a strait thru muffler which will net better performance than a baffled muffler (it will be like runningh strait pipe) http://www.youtube.com/watch?v=tFkJJhhafLM

It sounds good when your just cruising around but ricey once the wasegate opens up as you can hear in the video

any pics or videos? I doubt you saw the same explorer on youtube as he just said hes pushing 8psi

Have you ever considered a remote mounted turbo theres a 4.6L exploder over at theturboforums running in the 13s with pretty much just the turbo kit and sct tuning to back it up

the narrow band cheapy AF gauges are a waste of money they are just a light show for looks. as far as the knock sensor there isnt one. unless theres one on the 93 that i dont know about. red tops are 19#ers

hooker max flow theres a clip on youtube of a 4.0 with a max flow its sounds good and its a strait thru muffler which will grant you more torque and HP over a baffled rustmaster http://www.youtube.com/watch?v=tFkJJhhafLM http://www.youtube.com/watch?v=45cDQvDM-K4

well my truck is back on the road running welll with the 21#ers

All slapped back together runs pretty good heres a video i had about 50-75% throttle into it shifting early

the AF gauges that tap into your narrow band O2 sensors are useless. There nothing but a light show. You need a real wideband to get actual results. The AEM UEGOs go for about 200$ on ebay there a widley used wideband. under boost AFR should be around 11:1-12:1.

im just letting the wastegate open at 5 psi. For now until I have some good tuning Im just going to keep the boost on a conservative level. As for changing MAF housings that can throw the AFRs way off. Without a wideband O2 you woulnt be able to tell if it leaned the motor out or what. I...

my truck didnt ping that hard even when i was heavy into the throttle at 15 psi. But it did rattle a little depending on load. it never pings when i have the boost turned down to 5psi and thats the plan until i get a wideband someday. My truck is stuck in open loop as i dont have the O2 sensor...

if you retarded the timing like that it would probally have terrible performance. EGTs would be elevated by the unburnt fuel burning in the exhaust. Performance would be horrible, lacking power, overheating......You can try but dont be suprised to find terrible performance. The spout is on...

you may have had the wrong size on the quick release tools. ANd i like the plastic ones the steel ones are dead to me

Its fun to drive. its a 281ci 4.6L 2V out of a 01 Mustang GT with the still stock 4r70w with a small turbo. Im converting it too twins and alot of more work will be done on the car soon;rebuilding suspesion, interior, windshield replacement, body, brakes...\ Thats also why the truck is going...

Some people just start tearing in because they have a vision of how great its going to be. Then when they have no time and barely any money to get it done and the trucks all torn apart, parts all over the place, parts not fitting, frustrated and so on....Then they just give up an sell the parts...

There only 3lbss difference and Jakee Im not sure if the GT pump would work Id have to look into that. It is the return style. I thought the GT supercar was a non return style as alot of the newer mustangs run the GT pump for more fuel as they are returnless. WHen i get around to it I was going...

well since it was leaning out and Im not ready to blow any more cash right now on the exploder i decided to at least throw these in and see how it runs. these were just laying around. and of course no more guttsy high pressure pulls. Im just going to keep the boost down to 5psi the heads...

If you just leave the motor as is and try fored induction you may be more sucessful. The 4.0 can take boost and if its tuned correctly you could be on your way in no time. If your planning to do a full motor build.....it may never get done and youll be working on it rather than driving it. if it...

my turbo 4.0 does have off the line power depending on the gear im i see full boost before 2K. I threw a turbo on my truck stricly because it was a turd hauling loads and trying to get up a hill, passing.....My goal with turbocharging my 4.0 was and is torque and wicked fast response.

just kep screbing is what i keep telling myslef!

A turbo can help low end torque. Prefferably a "small" for the applicaton. A single large T3 would spool befroe max torque and pound for pound you will see more power improvment than a blower as your not robbing the crank of power. You could even strap on a Turbocoupe T3 wit ha .68AR housing and...

The only way to achive gobs of torque and powa outa a 4.0 ohv is a fully built setup (heads, cam, tuning, full exhaust) which costs lots of money $$$$$ or boosting it which can also cost alot of $$$$ just depends which way you want to go.

screw the fmu you have a EEC V ecu just get the xcal 2 stuff to start a bigger fuel pump and injectors would be nice as well

if it pulled spout i belive the timing would retreat to 10* that would be way too low. You could maybe try that with the octane adjust plug. The adjust plug should pull 3*. Im just going to wait until I get the MS stuff. i dont get any detonation at 5 psi just when i try and pull it higher

the only cylinder that was getting wet was #6 i found the culprit. I havent had them magnafluxed however with a look over the heads are in pretty good shape. Im just going to clean them up and throw it back together. My last set of heads cracked so bad the middle CCs were sideways and valves...

a jet chip is a waste of time and money. If you have a 95 or newer EEC V setup you could go with the SCT stuff. xcalibrator 2s can be had for cheap and skip the X3 its junk. The xcalibrator 2s can be found way cheaper than that 300+$$$$ jet junk

hooker max flow

the plate running down the middle of the maf is a anti reversion plate. Its there so intake pulses and growl noise that flow backward dont get measured twice throwing the reading off

between the 2vs from the explorer to the 2V mustang 99-04 the motor is the same minus the explorer got the aluminum block. The first thing you could do is a cat back and a tuner like the xcalibrator 2

the rust came off easy with penetrating oil and Ill take a scotch pad to it