2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

installing a front mount i.c? blow off?

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Old Feb 1, 2007 | 12:48 AM
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installing a front mount i.c? blow off?

alright, in the middle of swapping an 13b-t into my n/a 88 well im really kinda confused about this whole intercooling thing, jsut when i thought i figured it out i saw that the stock system is a recirculating piece of ****. well anwyas i basically need someones expertise in the field of intercooling.

i have
intercooler piping
couplers
b.o.v flange
ssqv b.o.
front mount

do i need anythng els? my friend said something about **** going wrong because i dont have an safc. help?

also, ive been looking at the air pump and i really just wanna eliminate it all together. Can oyu just take that entire little system off and put like a block plate over the holes and call it even?
-Ryan
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Old Feb 1, 2007 | 12:51 AM
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block off plates from www.2751engineering.com

do you have a TII fuel pump? TII transmission/custom driveshaft?

An SAFC is a Band-Aid fuel controller...Go with a full EMS...

But if the engine is stock, use the stock TII ECU and harness.
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Old Feb 1, 2007 | 06:58 AM
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The stock TII system doesn't vent to atmosphere like most aftermarket BOV do. The stock valve recirculates back into the intake to compensate for the lost air the AFM has already sent to the ECU to reduce running rich/bogging down/ and or backfiring. Your SSQV vents to atmosphere, so just make the proper adjustments on it (with the screw) to minimize over rich conditions when shifting.

I would suggest to get some kind of piggy back with that intercooler since installing it will lean out the A/F which = blown motor.
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Old Feb 1, 2007 | 10:50 AM
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might as well upgrade the secondary injectors while you're at it and get a wideband.
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Old Feb 1, 2007 | 11:54 AM
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Originally Posted by rogrx7
I would suggest to get some kind of piggy back with that intercooler since installing it will lean out the A/F which = blown motor.
is this really true? doesnt the ecu use the TB temp sensor to compensate?
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Old Feb 1, 2007 | 12:06 PM
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About as much as a kindergartener can "compensate" for carrying 250 pounds on his back...

(I'd say yes, to an extent, but if AFRs go too lean, you'll need to mod the computer, or get a standalone)
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Old Feb 1, 2007 | 12:15 PM
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Originally Posted by The Last Mahadocon
alright, in the middle of swapping an 13b-t into my n/a 88 well im really kinda confused about this whole intercooling thing, jsut when i thought i figured it out i saw that the stock system is a recirculating piece of ****. well anwyas i basically need someones expertise in the field of intercooling.

i have
intercooler piping
couplers
b.o.v flange
ssqv b.o.
front mount

do i need anythng els? my friend said something about **** going wrong because i dont have an safc. help?

also, ive been looking at the air pump and i really just wanna eliminate it all together. Can oyu just take that entire little system off and put like a block plate over the holes and call it even?
-Ryan
An SAFC is only useful if you plan to run larger injector. Removing the entire Emissions system is going to render your car useless for AZ emissions testing. However, you can put it all back on for the test. 2751 engineering referenced in this thread is local and I have his #.


I would suggest to get some kind of piggy back with that intercooler since installing it will lean out the A/F which = blown motor
Installing an intercooler on a stock motor will do NOTHING of the sort. If anything it will safe up the motor due to lower intake temps.

And the IAT WILL compensate for changes in air temp.
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Old Feb 1, 2007 | 01:11 PM
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Originally Posted by J-Rat
An SAFC is only useful if you plan to run larger injector. Removing the entire Emissions system is going to render your car useless for AZ emissions testing. However, you can put it all back on for the test. 2751 engineering referenced in this thread is local and I have his #.




Installing an intercooler on a stock motor will do NOTHING of the sort. If anything it will safe up the motor due to lower intake temps.

And the IAT WILL compensate for changes in air temp.
Considering a FCD was not put on or is going to be put on. But you are right.
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Old Feb 1, 2007 | 02:44 PM
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Originally Posted by J-Rat

And the IAT WILL compensate for changes in air temp.
Yes, it's designed to. Within reason. But obviously, don't expect it to work so well if you're pushing 20 pounds or boost on a large-trim turbo
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Old Feb 1, 2007 | 03:13 PM
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If you're pushing 20lbs on a stock ECU you're a retard anyway. Regardless of anything else.

Maybe a remapped 3rd gen computer, but never on an FC.
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Old Feb 1, 2007 | 03:31 PM
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Originally Posted by Valkyrie
Yes, it's designed to. Within reason. But obviously, don't expect it to work so well if you're pushing 20 pounds or boost on a large-trim turbo
He never said anything about raising boost to 20psi and having the stock ECU compensate it. He said if he can put a front mount on. Yes in my opinion you SHOULD do it. The stock TMIC is a piece of sh*t. You dont need a piggy back to put a front mount on. I've put a front mount on all my cars (the very first mod I've done) without a fuel controller with NO problem at all. Im with J-Rat on this one. :smiley_12
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Old Feb 1, 2007 | 05:10 PM
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My point being that it's foolish to assume that every car works the same way, and not to assume it's always safe to slap an FMIC on there without taking fuel into account...

And the stock ECU, AFM, and such, are only designed to work within a certain range of air flow, air density, etc... ie, boost levels, turbo size, injector size, fuel pump, whether or not the fuel system is properly maintained, etc.

In other words, just be careful...
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Old Feb 1, 2007 | 05:22 PM
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Originally Posted by FrankV702
He never said anything about raising boost to 20psi and having the stock ECU compensate it. He said if he can put a front mount on. Yes in my opinion you SHOULD do it. The stock TMIC is a piece of sh*t. You dont need a piggy back to put a front mount on. I've put a front mount on all my cars (the very first mod I've done) without a fuel controller with NO problem at all. Im with J-Rat on this one. :smiley_12

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/turning-up-boost-616050/

this is why I said what I said.


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Old Feb 1, 2007 | 05:24 PM
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ahh.. ok.. I get it now..
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Old Feb 1, 2007 | 05:49 PM
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I am assuming the thread starter wanted to add the IC with no associated increase in boost.

If the boost is raised, thats a different story
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Old Feb 1, 2007 | 06:11 PM
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Originally Posted by FrankV702
ahh.. ok.. I get it now..
how about that top
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