94-97 supercharger options/info

[SPOOM]

What are the available supercharger options for a 1994-1997 Miata? Have you completed any testing with these cars? Are there differences in the 5th injector setup or pricing with these cars as opposed to the later models? I'd be very interested in seeing a dyno chart for a supercharged 94-97 on 93 octane...

[Tom @ Fast Forward]

Mark (Zigzag) had the first install of the coldside and it ran exclusively on the 5th injector with the SS controller. It made 192 (195?). Mybe he will pop in here and post the dyno. I will try and round up one locally and run some graphs as well but it will be on 91. Only difference will be that it will be great on 91 and could possibly step up a pulley size on 93.

[Anonymous]

Like Tom said about Marks car, I'm also running just the ss controller and 5th inject for fueling on mine. I did this because there wasn't really much other choice for me with my 1.6 ECU(I specifically did a 1.8 swap with a 99 engine in order to get the Coldside). But having put just a tad over 10k miles on it since the install, it runs great! Smooth as silk and more than enough power(yeah, one of these days when I get a chance I have to dyno it) thats running on a 99 engine with stock compression ratio...no ping on 93 octane in Texas.

[Steve]

I've got a '97 that you're welcome to use for testing! ;)

[Tom @ Fast Forward]

Just sold a 2000 SC to California. You could be next. :)

[Tom @ Fast Forward]

I have a 94-97 volunteer for testing (96?). I will get it week after next.

Dynos will come as soon as I get them.

[DBRISCOE]

The car Tom will be using here in Phoenix is a 1994 with a stock engine, coolant reroute, and a JR Header and Cat Back for exhaust. If all goes well, he'll have next week for tuning!

Daniel

[Tom @ Fast Forward]

Daniel,

Thanks for the loan of the car. I think a lot of people will be happy to see the results of the testing.

Tom

[SoOSpEcMx5]

Any updates on this 94?

[Tom @ Fast Forward]

Mike's shop should finish it tomorrow. i saw and heard it run this morning and it sounded great. As noted in
the 94-97 section, it hadbthe cam gears indexed wrong. they just have some cleanup and it will go off to the dyno. Dyno is closed Monday so it will probably be Tuesday .

[SPOOM]

I would like to see what can be obtained with 93 octane, the lower compression ratio of these cars, and a pulley upgrade (if possible.)

[Tom @ Fast Forward]

We will try his with the 105 (stock) first and then the 110 and possibly the 115. We'll run the tests on 91 first and then 93/94.

Just for reference, we mix 3 gallons of 101 with 9.5 gallons (12.5 gallon tank) to get ~93.4 octane. We are now on "summer" gas which the pumps say contains up to 15% MTBE. However, MTBE (a known carcinogen) is now banned out here so I have no idea what is in it. At $3.19/gallon gas, I don't understand why people out east get 94 for the same price or less than we pay for 91? :?:

[Gord96BRG]

Hi Tom,
Hoping the IAC bracket shows up here today (damn Canada Post! ;) ). I'll have an issue finding a place to mount both it and the vacuum manifold on the firewall, since I have ABS. I was looking at the remote IAC for 99 thread, and wondering if I should also modify the vacuum ports on the throttle body as you've done on the 99 setup - go to a single outlet? Once I get the bracket, I'll see how the fit is with the ABS on the firewall. I might just look on the passenger side of the engine compartment, forward of the manifold...

Other question, on the 94-97 IAC, how do you route the coolant lines? I assume I have to forget the pre-molded ones and get generic hose, but can I go from the back-of-head outlet to the IAC, IAC to oil filter sandwich, then oil filter sandwich to front thermostat port? (assuming firewall mount)

(Oh, and how go the 99+ fuel rails? :D )

Thanks,
Gordon

[Tom @ Fast Forward]

Did it show up? I hope so as well.

I wonder if, in your case with the ABS, it wouldn't be better to mount the IAC and VDB someplace else like the passenger fender. Location could be on the, now pretty empty, drivers side. Location is relatively unimportant. I wonder if there is even a place under the intake?

The two water lines will just need to be removed and replaced with generic hose and route There was only a couple 94-97s done and each was different. It is relatively small hose so they should be easy to route to wherever you decide to mount the IAC. I am not sure how BRP did the other 94-97 cars but I think you can take a short length of 5/8" hose and use it off that HUGE nipple on the IAC and fit a few inches of 3/8" huse inside of it as a means of adapting to the 3/8.

I actually got to see your fuel rail today. I saw it at ~9:00 AM. It is probably finished but I was out with Chuck this morning and for lunch (thanks Chuck) and at Mike's place programming the SS for Dan's 94. It will be on dyno Tuesday at 10:00. I really want to make 200+ with his car. :-) I just didn't get back to the machine shop. I will, however, pick it up Monday I'm sure. :) They look really nice.

[Tom @ Fast Forward]

I would like to see what can be obtained with 93 octane, the lower compression ratio of these cars, and a pulley upgrade (if possible.)

The dynos are in the 94-97 section now. It was on 91 octane, more or less. He had 91 in the tank but it was over 6 months old as it took that long for Dan to build the car/engine. I spiked it with a gallon of 101 just to help it get over being such old fuel. I would guess it to be just shy of 92 octane. There was no ping so I don't think 93 would have added much to the WHP. However, I do think that if it had been the FFS version with the injector post-blower rather than pre-blower, it would have picked up 5-10 WHP.

[Gord96BRG]

AAAHHHHH! :shock: Well, I got the 060441 belt to mount up, and was proceeding with other bits. (This is on my install of a 99 kit on my 96, with a 99 head). I went to move the TPS from my old throttle body to the new throttle body - and it turns out that my 96 Throttle Position Sensor isn't anything close to compatible with the TPS mount on the big throttle body!

The two mounting bolts might match up, but that's it - the circumference of the inset on the TPS is larger than on the TPS mount, and the TPS mount has a flat central blade - but the 96 TPS itself expects 2 opposing "wings". There's NO way those bits are fitting together!!! So - do I need a TPS from a 99 - 2000? Is the connector on a 99 TPS compatible with my 96 wiring harness' TPC connector? How much does a 99 TPS run? Rotten thing is that I've had to order a few bits from a recycler over the past few weeks; if I'd had any idea the TPS would have been an issue I would have ordered that as well!!! Now, I'm a day or two from being ready to fire it up, and I can't until I resolve the TPS issue.

I suppose this is what I get for not just buying a proper 94-97 kit in the first place, but there were various BRP-related reasons where I needed to buy from them, and this was the best I could do.

ANY suggestions and ideas will be much appreciated!!!

[99mx5]

Tom makes the TPS adapter for the 94-97 kits and also makes the low-profile blower spacer. It shouldnt be hard to pull the blower and spacer from the IM top place without removing the plate. You will need some ultra black sealant and I have found that throttle body cleaner makes it easy to clean up the old ultra black residue.

I think the TPS is different for the NA and NB. The NA has a microswitch for the closed position and the TPS adapter must be adjusted so that the switch is toggled off when the throttle is closed.

[Tom @ Fast Forward]

94-97 TPS adaptors are in stock. Also have the 94-97 SC spacers in stock. Let me know.

[Gord96BRG]

E-mail coming!

[Tom @ Fast Forward]

E-Mail received. I will get the TPS adaptor and spacer off tomorrow. At this stage, changing the spacer might be a chore. The alternator gets in the way of the front bottom bolt and it needs to come out. Also, I am sure you will tire of only 170WHP shortly and want to get up in the 210+ range so, my crystal ball says e-cool may be in your future. As a retrofit, the easiest way is by drilling and tapping the spacer and that requires a 1" spacer. FFS kits have the manifold drilled and tapped but it is easier to just replcae the spacer for a retrofit. You may want to use that as your excuse to keep the 1" spacer as the 1/2" spacer is too thin to do the job.

In any case, the parts will be overnighted to you on Monday and you can decide.

[Gord96BRG]

I am sure you will tire of only 170WHP shortly and want to get up in the 210+ range so, my crystal ball says e-cool may be in your future. As a retrofit, the easiest way is by drilling and tapping the spacer and that requires a 1" spacer. FFS kits have the manifold drilled and tapped but it is easier to just replcae the spacer for a retrofit. You may want to use that as your excuse to keep the 1" spacer as the 1/2" spacer is too thin to do the job.


170rwhp? That sounds like a challenge! Care to make a small wager? :twisted: I'm targeting 200 rwhp corrected Dynojet rwhp. I'll probably run on a Mustang dyno, though, which is supposed to be about 13% lower than a Dynojet - so my target would be 177 rwhp corrected on a Mustang dyno.

In the interests of full disclosure, I'm going to be using a FM Link ECU with 550cc injectors - and once everything is checked out and stable, I should be able to bump the rev limiter to ~7700 rpm with the 99 head without hitting valve float...

[99mx5]

If you have a ported blower, Tom cant lose. :twisted: :D :P :wink:

[Tom @ Fast Forward]

If you have a ported blower, Tom cant lose. :twisted: :D :P :wink:

If that blower is ported, I'm in for $100. :roll: :lol:

If it is not ported, 200 will be a walk in the park. 210-225 would be a better goal.

[Gord96BRG]

If you have a ported blower, Tom cant lose. :twisted: :D :P :wink:

If that blower is ported, I'm in for $100. :roll: :lol:

:oops: Actually, it is ported - before Ari had his results, BRP was pretty positive about the benefits of it, so I had them do it before they shipped the kit.

Still, never know - maybe you better hold off billing me for the TPS adapter just yet - I could take my $100 winnings in parts! :lol: (just kidding!)

[Tom @ Fast Forward]

I'll do the billing but you can hold off paying. There is actually a pretty good chance you will make 200 or close to it but, if it was unported, I think 225 would be a cake walk with the 99 head.

[99mx5]

They still stand behind it, my case is a mystery to everyone. :oops:

[Gord96BRG]

the parts will be overnighted to you on Monday and you can decide.
Parts indeed arrived today! (they beat the fuel rail and hoses sent last week! :lol: ) I've installed the TPS adapter, so status is:

- all vacuum lines complete (except cruise)
- all fuel lines complete (using 99 rail; will change out to FFS rail in June)
- coolant lines still need to be connected to IAC.

I ended up adapting a shock tower brake mount to mount the IAC, above the passenger side shock tower. It gives short vacuum connections to the TB and TB adapter, but the coolant lines are a bit longer than I'd like - no big deal though. I had room in that location since I removed the stock EGR solenoids and valves which were clustered around there, as I'm not going to run EGR.

Aside from the coolant lines;
- I'm going to leave the 1" SC spacer and see where it interferes, then probably clearance the hood rib.
- I need to move around the wiring connectors, wire in the Innovate WB O2, and plug in the Link ECU
- oil change, re-install radiator (new Koyo 37mm), fill coolant system
- re-connect battery, power up electrics (and fuel pump), check for fuel leaks
- test electronic connections, then try to fire it up!
- If it starts - check for oil, coolant, fuel leaks, run for 10 minutes.
- Change oil again, then if leak free, take it off the jackstands and do a short test drive!

It's getting sooooo close after all this time!

[Tom @ Fast Forward]

Glad you got the parts. I'm proud of that TPS adaptor design. Don't forget to adjust the TPS. It is critical to idle for the 94-97.

They may have beat the fuel rail but they cost $55 to ship vs. $12.

What size hose and what length did you use for tha IAC heater hose?

I sent the latest 94 kit with a piece of 5/8 hose over the 3/8 hose with the restrictor inside and a hose clamp around it as a method to adapt to the IAC valve inlet. Looks pretty nice considering. How did you adapt?

Make sure all of the new fuel lines are TIGHT.