paul

iTrader: (21)

Oops, Yes, Jeremy.

Yes, very satisfied. Calling the local polishers now. I have heard huge gains can be had by keeping that exhaust temp up 1/4 a degree. I can't wait to see how fast my **** spools now.

Braineack

iTrader: (62)

Paul is so 1337

TurboTim

iTrader: (9)

Assuming you have adequate head shielding, wouldn't you want to get the heat out of a downpipe instead of keeping it inside? Lower temp should mean lower (back) pressure.

I didn't go to class the day they went over radiation, but I think the difference between a flat black DP and Polished DP is like nothing. Same goes for intercoolers. end hijack.

GRM Tom

Fair enough. I've emailed Jeremy a couple of times, and yes, he's the man to talk to about Hydra tuning. We'll be working with him as the car progresses toward our 300whp goal.

There's a difference in my mind between running out of steam and making the same power levels. If you look at the graph (good idea to photograph it, I hope it's legible) it certainly seems to be trending upward right to the point where we let of the gas. Torque will naturally go down as you approach redline and cross the 5250 rpm barrier, but that's a mathematical reality. (red lines are stock numbers, blue lines are post-turbo.)

IMG_6146.jpg

Braineack

iTrader: (62)

I'd personally like to see less than a 50rwtq drop between 5-7K.


is it good now, yes. could it be better, yes! what exhaust was utilized?

GRM Tom

Better is on the agenda, shortly after some suspension work. The engine is much more capable than the suspension at the moment.

The exhaust is an FM Turbo single. Very quiet.

hustler

iTrader: (6)

too small. Probably sounds like a hair dryer.

y8s

iTrader: (8)

you dont use any shielding in your engine bay? has your brake fluid reservoir melted?

or more importantly, would you buy something new if it looked like it had sat in someone's back yard for a year?


so sarcastic and grumpy....

jayc72

iTrader: (14)

Paul wasn't held enough as a baby.

cueball1

iTrader: (13)

GRM Tom,

Welcome to internet heaven and hell. Plenty of FM bashers around here. Plenty of FM supporters. Plenty of people willing to insult anyone and everyone. Plenty of people who really want to help. In other words it's a fairly wide open internet forum. Mods don't step in to keep feelings from getting hurt here.

For a 1 day build and tune those are nice numbers. Well done. Of course there is going to be plenty of work to do after. This wasn't meant to be perfection in a day, just a reasonable build. That's what you accomplished.

200+ hp in our little miata's is a ton of fun isn't it! Every guy I see in a miata I want to stop and tell him to go FI.

Plenty of love here for your mag! Good to have you and your other guy coming in and participating here.

hustler

iTrader: (6)

How long have you had the car now, and you're still giddy? Its going to be tough for me to throw down a 250-300whp dyno pull, then get on a plane and leave for 6 weeks.

...maybe I can drive the miata from dallas to chicago so I don't have to go through the withdrawal.

Keith@FM

iTrader: (1)

Some technical comments about the downpipe.

The upper cast section is used because it's basically indestructible and it allows us to do some flow management. That's good.

The lower section is two pieces for a few reasons: it allows us to swap out the bottom part for different applications (ie, a 1.6 car with a 1.8 cat to avoid the little bitty 1.6 flange) and it gives us adjustability to mate up to just about any exhaust. Not everyone uses exhaust components that are identical, and we've found over the years that having the ability to adjust our parts makes for a high success rate on installs. The two-piece lower section with a slip joint is more reliable, lighter, offers more ground clearance and is less expensive than a flex joint. The fact that it's easier to ship is a bonus.

As for the polishing, well, that's just something we do. All of our exhausts are polished as well. Customers rarely complain about it. And the downpipe, like our exhausts, is made in California by Thermal R&D and carries a lifetime warranty. Is that so wrong?

Jeremy did the initial tune on the Hydra, Bill did the fine-tuning. They're both very competent tuners, and we ended up with a car that we were happy to hand off to a journalist for a 7 hour drive home Jeremy stayed back at the shop while Bill and I did the install because we needed someone to help our customers, and I'm a bit more of a wrencher than he is.

As for the install conditions, Tom did neglect to mention that I used a big sheet of bubble wrap to lie on when I was working under the car. I think it was used to pack part of the turbo kit. What can I say, I'm a softie

Tom also didn't mention that you can get a free copy of the magazine if you want it. We're going to send a copy to all of our customers, but you can request a copy by going to http://grassrootsmotorsports.com/try/fm256/ . If you put in the request by August 15th, you'll get the issue with the turbo install.

jayc72

iTrader: (14)

Would FM do a trade for a BEGI DP (SS divorced)? I like the design of the FM part better, but you guys didn't have it in stock when I wanted to buy :(

GRM Tom

What are you saying, journalists can't be trusted? Screw up one timing belt installation and I'm branded for life...
At least I got the Berzerkeley running over the weekend.

For what it's worth, the Miata hasn't given me a spot of trouble since the install, so it must be idiot-proof.

cueball1

iTrader: (13)

Hustler,

Yes, giddy is a good word. Damn, I'm lovin the power. Every time I get in the car it makes me a little happier inside. What's that? I think it's roses I smell...

From the sound of it, GRM Tom is feelin the love of the high powered Miata too. It's the 1st truly fun car I've owned in quite a while.

Saml01

iTrader: (9)

You know Paul always seems calmer in person.

cueball1

iTrader: (13)

That's the trouble with internet forums. Without the face to face courtesy is not the priority it is in the real world!

Keith@FM

iTrader: (1)

You should have seen Tom during the install. He was giggling like a little girl.

nicacus

iTrader: (7)

+1
My turbo miata is more fun than my dads corvette. (It's an 85 )
I have yet to drive a car that is more fun though.

cueball1

iTrader: (13)

Yeah, I imagine Tom's happy and in true GRM form. Take one of their favorite cars, the Miata, and make it competetive with nearly anything else at the track. I've got about 10K into my 94 with the turbo, suspension, wheels, tires, etc. I figure I have a car that should be able to hang with just about anything at HPDE days. Elise? Vette? M3? Sure there are some really big buck cars should pull away but 80% of the typical HPDE field will have trouble with me.

Driver skill will certainly an issue but the car isn't. That's a lot of fun for 10k.

Can anyone say Time Attack!