supercharge me!

[Jackstand Queen]

There's a bunch of devices that need to be swap over and, in most cases, wired in.

In general, an ignitor, AFM, alternator, separate voltage regulator called the IC regulator, TPS. Now if you managed to get a JDM gze and it's ECU, it might use a map sensor instead of an AFM. There two idle related VSV's that I think are critical: the high temperature idle up VSV, and the Air by Pass VSV. You can probably find an identically functioning VSV off another japanese car from the 80's and with a conversion of the connector terminals . . just plug it right in.

If you are resourceful, between forums, junkyards, ebay, and the net in general you could probably find everything you'd need within a month, or so. Parts are more available in the warmer months for some reason. This doesn't apply to 328FTW, because his seasons are all backwards. I shouldn't start in on Z-landers . . . cuz theys crazy. (joking)

By the way, there's a link to a free download of the 1000 page factory service manual that cover's SC's. Do a search for "BGB download" and it ought to pop up. Haynes manuals can still be ordered at your local parts store. They are pretty handy for easy fixes.

[88*mr2]

ok well the engin i would be getting comes with literaly everyting i need harness ecy starter alternater even a manual trans lol so that eliminates alot of searching lol...wat about that supercharger light? do i need to swap that out or dose it really matter?

[toyotaspeed90]

Originally Posted by Jackstand Queen

I'd say everyone here posted something trying to be helpful, based on their own personal bias, abilities and knowledge. Its all just food for thought, for someone who might take a plunge on a challenging project.

Its idiotic to label posters "idiots" and then disclaim afterwards "BTW, not trying to offend anyone".

Although, I must admit that, the comparison of finding Ferrari's and SC's at junkyards was nicely phrased.

I hate to say it but people on this thread are making it sound harder as all hell to do any sort of forced induction on an AW11.

Here are the facts:

Unless he finds a 100% uncut aw11 4agze with 4agze electronics (all) from an aw11, he WILL have to do wiring.... all FWD 4agze's require rewiring

Most standalones have more than enough backing to make the wiring easy

Supercharger setups CAN be used on the n/a motors.

All of the VSV's are NOT required. In fact, my s/c setup utilizes ZERO vsv's.

Unless he uses a C series, he WILL have to modify mounts unless again, he finds 4agze/E51 full (and in good shape) mounts


People who haven't done much wiring and/or do complete swaps come onto forums all the time stating that "stand alone is much too difficult and much more expensive". When you factor real life comparisons that statement is false, and quite possibley backwards.

So, when someone is stating that it can't be done (when it can) and that you need to be a god to understand it is misdirection.

[88*mr2]

Originally Posted by toyotaspeed90

I hate to say it but people on this thread are making it sound harder as all hell to do any sort of forced induction on an AW11.

Here are the facts:

Unless he finds a 100% uncut aw11 4agze with 4agze electronics (all) from an aw11, he WILL have to do wiring.... all FWD 4agze's require rewiring

Most standalones have more than enough backing to make the wiring easy

Supercharger setups CAN be used on the n/a motors.

All of the VSV's are NOT required. In fact, my s/c setup utilizes ZERO vsv's.

Unless he uses a C series, he WILL have to modify mounts unless again, he finds 4agze/E51 full (and in good shape) mounts


People who haven't done much wiring and/or do complete swaps come onto forums all the time stating that "stand alone is much too difficult and much more expensive". When you factor real life comparisons that statement is false, and quite possibley backwards.

So, when someone is stating that it can't be done (when it can) and that you need to be a god to understand it is misdirection.

annoyance...i think that u think u know alot...im not going to say i do because i really dont know everything about imports and the electronics that go in them...and u seem like ur one of those ppl who like to present themselvs as an intelligent knowledgable "car guys" .but u know everyting so nevermind

[88*mr2]

Originally Posted by toyotaspeed90

I hate to say it but people on this thread are making it sound harder as all hell to do any sort of forced induction on an AW11.

Here are the facts:

Unless he finds a 100% uncut aw11 4agze with 4agze electronics (all) from an aw11, he WILL have to do wiring.... all FWD 4agze's require rewiring

Most standalones have more than enough backing to make the wiring easy

Supercharger setups CAN be used on the n/a motors.

All of the VSV's are NOT required. In fact, my s/c setup utilizes ZERO vsv's.

Unless he uses a C series, he WILL have to modify mounts unless again, he finds 4agze/E51 full (and in good shape) mounts


People who haven't done much wiring and/or do complete swaps come onto forums all the time stating that "stand alone is much too difficult and much more expensive". When you factor real life comparisons that statement is false, and quite possibley backwards.

So, when someone is stating that it can't be done (when it can) and that you need to be a god to understand it is misdirection.

o and the gze i found comes wit harness ecu motor pwr steering ac tranny alternator starter intake manifold exaust manifold and a few other componets... swap would be cake

[328FTW]

Originally Posted by 88*mr2

o and the gze i found comes wit harness ecu motor pwr steering ac tranny alternator starter intake manifold exaust manifold and a few other componets... swap would be cake

what was it pulled from? If it has power steering its not an mr2 so if its a later 4agze with coil packs and the map sensor instead of afm it will require some wiring to get in (well its not from a 2 it will anyway), won't be that bad though because this swap has been done quite a bit so the info for the swap is around and accurate, sucks when your told find the green wire and there isn't one

[Jackstand Queen]

The supercharger light comes with the SC instrument panel. Since your car is an 88, an SC intrument panel should be plug and play.
By the way, the SC light doesn't actually, really reflect that the SC clutch is engaged, but rather when a certain threshold has been reached in air flow through the AFM. Whether to swap the IP's out for a light that really is a lying SOB is a matter of personal preference.

There's also a gas switch select that's on the under panel beneath the I. panel. This is actually more important that the SC light. If premium gas is selected on this switch, the timing gets advanced by the ECU a small amount. I'm not sure if the JDM ECU has this function or not. Hmmm.

Sometimes, though not very often, I wish this forum had an "ignore post by" option. Its odd though, I've never before encountered any static with the technically astute Toypeed90 before. Maybe its her time of the month, and we just have to be tolerant and understanding.

[toyotaspeed90]

Originally Posted by 88*mr2

o and the gze i found comes wit harness ecu motor pwr steering ac tranny alternator starter intake manifold exaust manifold and a few other componets... swap would be cake

yes... I can be cocky about these cars... I've owned 9 aw11's, done 20V megasquirt swaps, have a megasquirted 87 hardtop ae101 4agze, megasquirted high comp smallport 7age in my 87 t-top, modified the stock toyota 4afe computer in my ae92 to run a smallport 4age.

I've also worked on tons of other 4age, 4afe, 4ac powered cars (FWD, RWD, MR alike) and have the right resources around me if I have a question.


If you found a 4agze that has a power steering pump then you found a FWD 4agze. You will need to wire it as the molex connectors on the FWD and MR2's are nowhere near alike.


Wiring a standalone is surprisingly simple. A megasquirt can be purchased prebuilt with a labelled harness -- there's a total of around 25 wires, all others are unnecessary. The wiring on MS is not vehicle specific, as it will work on any engine with 1-12 pistons.

[328FTW]

Originally Posted by toyotaspeed90

Wiring a standalone is surprisingly simple. A megasquirt can be purchased prebuilt with a labelled harness -- there's a total of around 25 wires, all others are unnecessary. The wiring on MS is not vehicle specific, as it will work on any engine with 1-12 pistons.

That's not the problem the issue is people won't try to learn what they need to know about tuning it they want to plug it in download a map and start the car. It doesn't work like that the first time it will take a little time and patience to learn and take in what you are doing. People get impatient then drive it down the road to show off their new turbo to friends and melt all the pistons, seen it done many a time. Can't speak for OP just saying a lot of people can't seem to do the legwork when you launch into the world of tuning, no its not hard just its easy to really fu** up your motor.

[88*mr2]

Originally Posted by 328FTW

what was it pulled from? If it has power steering its not an mr2 so if its a later 4agze with coil packs and the map sensor instead of afm it will require some wiring to get in (well its not from a 2 it will anyway), won't be that bad though because this swap has been done quite a bit so the info for the swap is around and accurate, sucks when your told find the green wire and there isn't one

its out of a corolla not another mr2

[Jackstand Queen]

I found a link on GZE swaps with some good info.

4A-GZE All Things...

[Benesesso]

Originally Posted by Jackstand Queen

The supercharger light comes with the SC instrument panel. Since your car is an 88, an SC intrument panel should be plug and play.
By the way, the SC light doesn't actually, really reflect that the SC clutch is engaged, but rather when a certain threshold has been reached in air flow through the AFM.

Just bought my first MR2--a 1988 SC, stock. Driving the 500 miles to return home, I noticed the SC green lite goes on at very low throttle openings, with no perceptible change in accel. or noise. I also noticed that the light seemed to be triggered by the throttle position sensor, because if I held the gas pedal steady just before the lite-on point, as soon as the pedal was pushed a bit more, the light came on IMMEDIATELY--no lag at all.

So, what actually triggers the relay--air flow, vacuum or the TPS? Any easy way to delay the trigger point to something like 1/4 throttle?

I think I'll install a boost gage like this one on my Busa to see whats going on.

[donnyavery]

Originally Posted by 88*mr2

hi i drive a 1988 mr2 n/a im looking to supercharge it and get some more hp out of it... suggestions on where to start? wat will be the things that i have to do to before S/C it? and where i would be likly to find the part(s)? can i S/c it if i dont build the block?

ok there seams to be i lot of opinions here so im going to throw mine out there(as ive done the 4agze swap to my 86, then a year later i converted it to a 4agte) take it as you may
1 there are a couple of ways to go about the s/c (build or swap ) some better then others ok first thing is to just do the research if you know what your dealing with its just going to be easier lets start with full 4agze swaps if you look for a 4agze with one oil fulled coil a distributor an the intercooler over top of the trans and the wiring harness and ecu and afm mechanically it a direct drop in wiring is basically just the fuel pump jumper, the starter wiring and fuel injector resister i was armed with basic hand tools a jack and jack stands and 6 mounts of research and parts gathering i started the swap at like 10am sat and the car car started sundry at 11am(i used n/a trans)
2 a turbo set up is just easier if you start with 4agze and yes there is a lot of work involved but it not hard if you have the done research and time but it can be aggravating (i posted the car for sale 2 times before got done) and right now im building a http://www.mr2.com/forums/forced-ind...get-build.html
3 have not done it this way but there is the hillbilly s/c motor witch i have seen work for some reason i dont know but it a s/c bracket and stock sc 12 with a rpm window switch to turn it on and a msd timing retarder to do the timing a diy voltage clamp to keep it from the 4psi fuel cut and a safc and aem wideband to tune. The stock sc on a na crank pulley will only make 6psi i all most for got you'll need a bov (sc will be prethottle body)and custom piping (i would not do it this way because it will cost just as much to do the swap right

your stock block will take 8-10 psi of boost with a good tune any more boost you will have no choice but to build ground up or the 4agze internals (i do have a sc and mounting bracket for sale and a good set of 4agze pistons w/20mm wrist pins)

[donnyavery]

i would like to agree with toyotaspeed90 theirs a lot of stuff in the sc harness you don't need i have no vsv no octane switch if you do any thing with the wire for it the ecu defaults to high octane timing setting i did a one wire alternator conversion so that dropped three wires out of the harness no sc light i mean y i got a boost gauge so y a light to tall you over 0 inches of mercury (boost) any way just saying you don't have to waste your time with a lot of extra wiring (this just my gripe about people crying about wiring)