2002 hotside 100/65

[Silverstreak02]

My setup:
2002 Miata
BRP hotside
100/65mm pulley
PCPro
Air/water intercooler
J&S Safeguard
VVT Tweak

[Banshee]

Wow, you made that with just the 100 mm pulley? Nice Torque.

[J_Man]

Is the printout from a Dynojet or from something else?

[Tom @ Fast Forward]

That was on a REAL Dynojet.

[Silverstreak02]

Wow, you made that with just the 100 mm pulley? Nice Torque.

Yes that was with the 100 mm pulley. It's interesting that the kit was advertised as 175whp with the power card and I never made any more than 163. Tom comes along with the PCPro and it makes 181. I'm very surprised with the results. The best part is what the dyno can't show. The car actually runs well now. Just this morning I turned the radio off to listen for the noise from the K&N to confirm it was still working. The acceleration is so smooth I thought the belt broke or something. It's nice to have a system that's almost invisible in operation.

[Silverstreak02]

Is the printout from a Dynojet or from something else?

It was done on a dynojet.

[Tom @ Fast Forward]

Jeff,

You are a testament to what I keep preaching. Drivability is worth way more than pure HP numbers. HP is great amnd more is better but when civility wanes I will opt for less WHP.

[J_Man]

It was done on a dynojet.

Thanks! I was just wondering what machine was that particular printout style coming from.

[Silverstreak02]

Jeff,

You are a testament to what I keep preaching. Drivability is worth way more than pure HP numbers. HP is great amnd more is better but when civility wanes I will opt for less WHP.

I consider myself lucky to have huge gains in both catagories. The wife even commented she's comfortable with the car now. She would never drive it before because of the idle dip and basic manor problems.

[rlyneis]

My setup:
2002 Miata
BRP hotside
100/65mm pulley
PCPro
Air/water intercooler
J&S Safeguard
VVT Tweak

What exactly is the VVT Tweak?

[Silverstreak02]

What exactly is the VVT Tweak?

It was a procedure developed by BRP to help with ping resistance and power loss on the 01+ cars. The target for the cam angle sensor on the cam was moved about 2mm by hitting it with a punch. I did a before and after dyno on the procedure and proved it did nothing to improve power or ping resistance. This was another one of BRP's poorly conceived and untested products. It was free, but not worth the effort. The PCPro improved both catagories and didn't require removing my valve cover and hitting my engine with a punch.

[zoom2xtn]

Silverstreak02

Our cars are similar except I have the BTB and the infamous idle droop. I've been living with it for about a year or longer -- I don't remember when I took it back to BRP to add the BTB but I've had the droop ever since. It looks like Tom has found the solution in his PC-Pro card. I want to learn more. I do no mechanical work. All I know is where to add gasoline -- everything else I leave to the skilled. I think this is my first post on this forum. I've just not participated in any of the Miata forums in the last year, year and a half, or so. I've been waiting on a solution for my idle droop. It may be here!

Do you know if Tom's PC-Pro card will cure the droop with the extra throttled volume of a BTB? I don't want to spend the $$ for a new intake manifold to reduce volume but it may be that or remove the BTB unless Tom's PC-Pro card will do the trick.

Tom is right -- a smooth running engine is worth far more than extra HP if you have to choose between the two. I, like everyone else on this forum, however, want them both.

Tom, if you see this chime in. If I don't hear from you soon I'll repost to you.

As an aside, Tom, I got the Marlin 1894 in 45 LC (20" octagonal) to go with the Vaquero and the Chinese (Carinco ??, I think, Model 99) coach gun. All are still in the boxes awaiting the finishing of the downstairs, which is progressing towards a fall completion. They will be more wall decor than anything else.

Lee

[Tom @ Fast Forward]

I'll have more data tomorrow on droop and driveability after we install the new hotside outlet manifold on Chuck's 99.

I recently acquired a 1968 Winchester Buffalo Bill Commerative hex barrel (with medallion) for $35 at a garage sale. Brand new in the original box and never been fired. Top That. ;)

Silverstreak02

Our cars are similar except I have the BTB and the infamous idle droop. I've been living with it for about a year or longer -- I don't remember when I took it back to BRP to add the BTB but I've had the droop ever since. It looks like Tom has found the solution in his PC-Pro card. I want to learn more. I do no mechanical work. All I know is where to add gasoline -- everything else I leave to the skilled. I think this is my first post on this forum. I've just not participated in any of the Miata forums in the last year, year and a half, or so. I've been waiting on a solution for my idle droop. It may be here!

Do you know if Tom's PC-Pro card will cure the droop with the extra throttled volume of a BTB? I don't want to spend the $$ for a new intake manifold to reduce volume but it may be that or remove the BTB unless Tom's PC-Pro card will do the trick.

Tom is right -- a smooth running engine is worth far more than extra HP if you have to choose between the two. I, like everyone else on this forum, however, want them both.

Tom, if you see this chime in. If I don't hear from you soon I'll repost to you.

As an aside, Tom, I got the Marlin 1894 in 45 LC (20" octagonal) to go with the Vaquero and the Chinese (Carinco ??, I think, Model 99) coach gun. All are still in the boxes awaiting the finishing of the downstairs, which is progressing towards a fall completion. They will be more wall decor than anything else.

Lee

[zoom2xtn]

Tom,

Congrats on a super garage sale find!

I've really spent some time on this forum tonight to get up to speed. You are doing great things! Thanks.

See my post at the PC-Pro topic.

Lee

[Silverstreak02]

Silverstreak02


Do you know if Tom's PC-Pro card will cure the droop with the extra throttled volume of a BTB? I don't want to spend the $$ for a new intake manifold to reduce volume but it may be that or remove the BTB unless Tom's PC-Pro card will do the trick.

Tom is right -- a smooth running engine is worth far more than extra HP if you have to choose between the two. I, like everyone else on this forum, however, want them both.

Lee


Lee

I had idle droop pretty bad before the PCPro and now it's gone. Whether you'll have that much success I'm not sure. I think I would go for the PCPro before I would get a new intake. Proper fueling makes a huge difference with the way the car runs and the power it makes. I picked up 18whp and 17lbs of torque with the PCPro. What are you using for fuel now and how much power are you making?

Jeff

[Tom @ Fast Forward]

Lee, for the record, the BTB does not increase the throttled volume. Throttled volume is the volume of space between the throttle plate and the intake ports. It does increase flow. Some people have found that idle problems occur with the BTB on the hotside if it is the MAC BTB. They don't always return smoothly to the idle position. The return spring is a bit weaker and the MAC doesn't use bearings on the shaft. The next part of the idle equation is, where is your IAC valve mounted/located. If it is on the dummy TB, that is also a problem. The IAC should never see boost. Last but not least is the engine management. What are you using?

[zoom2xtn]

I don't know about engines!! I don't know which BTB I have and I have no idea where the IAC is located. I think I have the Jackson Racing Power Card for engine contol.

I had an extra fuel injector mounted somewhere at one time but Brant took it off when he added the BTB, saying it was no longer needed. I don't know if it was controlled by the JRPC or if another controller was required. If so, I guess it's in the box with the 5th injector and other stuff.

I think the new intake manifold reduces the throttled volume and eliminates the idle droop but that is an expensive fix. I understand it does increase HP but I'm no longer in the hunt for more HP. I want smooooth but since I've got the BTB I'd like to use it but not at the cost of a new intake manifold. If it has to go, it as to go.

Just so you know what I have, I have the J & S Spark Guard mounted behind the passenger seat, a JR vacuum/boost guage mounted in a pod on the A pillar and a Simple Digital Systems air/fuel gauge mounted on the steering column.

Lee

[Silverstreak02]

Lee

Do yourself a favor and buy the PCPro.

Jeff

[zoom2xtn]

Jeff

It sounds like the PowerCard Pro with Tom's map is the deal. I may, however, just wait on the next version that controls the 5th injector if it doesn't take to long to debut. I've lived with the idle droop for so long, I'm used to rolling the right foot off the right edge of the brake pedal and giving it a little gas so it doesn't die when I have a quick stop.

I hate to buy a second $300 card just to control 1 injector. Of course, I may not need a 5th injector. I need someone to tell me how the PCPro will work with the 4 stock injectors I have now. I'm not sure about where the 5th injector normally goes, what Tom's "E-cool" 5th injector does, or how it does it. I'm not really interested in a lot more power; I have almost enough for me.

I'm really ignorant about engines, but too busy at this time to go to tech school at night.

I just want to be sure everything is running smooth when, in a year or so, I pass this 2002 Miata down to my son for a few (3-4)years and then to my granddaughter (13 in April) when she is at least 18. I want a PRHT with paddle shifters next time (year or so away) so my wife can drive it.

Lee

[Curiousgb]

I'll have more data tomorrow on droop and driveability after we install the new hotside outlet manifold on Chuck's 99.

I recently acquired a 1968 Winchester Buffalo Bill Commerative hex barrel (with medallion) for $35 at a garage sale. Brand new in the original box and never been fired. Top That. ;)

Cars and Guns, if one is to have a weakness or two I think those will suffice!