My injectors are larger than normal only cause I have intentions of another 105 WHP LOL....so they are 550s...but I could achive this power with 440s

I have had the kit for 10K now

everything other than the pistons is COMPLETELY STOCK

 

my friend brian has a SPI kit on his mini, its a really nice setup and from what i hear makes 300 whp. I've gone for a few rides and the car is insanely fast in second and third, it feels quite a bit faster than my mini in 2nd with the mods in my list.
we were coming back from a run at bear mountain two weeks ago and we decided to do some 3rd and 4th pulls. He pulled about 2 car lengths in 3rd, but 4th i was surprised to see my car actually beat him for a second before his turbo spooled and he very slowly started to pull on me. But it wasnt anything like i thought it would be. He's been running it for almost a year with no issues. Its a very nice car, and I'm jealous I pulled over once to tell him where we were going and as he slowly pulled up the car sounds like darth vadar with this amazing sucking sound. When we go on runs you just have to make sure to not be behind him as his exhaust doesnt have a cat and stinks. The only cool thing about it was when i was running behind him going to the bear mountain run and he let off the throttle and two big flames blew out the back. It was pretty cool.

 

do all the kits remove the cat?
how do you get past emmissions testing and the second o2 sensor causing fault codes with this?
also is it possible to run this kit with a cat???

 

i know the helix turbokompressor runs a stock cat, at least from what i hear. The reason he took his off was because it made an extra 30 horsepower.

 

you can always get a high flow cat...also...as alta has talked about...an o2 simulator is always helpful...no codes then

 

So Tuls, your car has the FTR/SPI Stage 2, nothing more, nothing less correct? And as we've seen with your dyno your pushing 295whp and 275lb/ft tq. Do you have an exhaust? Would having a straight-through or extremely high-flowing 3" exhaust yield more power and put you over the 300whp mark? What size piping is the exhaust manifold and downpipe?

If I wanted to replace the 440cc injectors with 500cc injectors would FTR do that at no extra cost?

 

As I noted before, I'm newly Turbokompressored. Eric at Helix told me he has 4 maps of increasing aggressiveness and that I have the next to most conservative map due to my distance to the shop.

I have the setup as seen on the Helix website. I haven't dyno'd, and I'm not sure if I'm going to. I have scads of power. I can break the wheels loose in second while on a roll. Easily. A dyno number isn't likely to make me more or less happy with my setup.

350 miles with no toubles.

 

my exhaust is about as straight though as it's gunnah get...it's 3" straight out...with a small can at the end where the battery box USED to be....LOL

it's not reall the stage two...it's just pistons...called it stage two cause...well it works...LOL...it allows you to step it up...so maybe it is stage two...LOL

as for the injectors...if you called hubie and asked for the 550s...I am sure he'd have no problem with it...and you are correct that it would be of no extra cost...it's your preference

it's not about #s...it's about tuning....ask Eric...I use a mustang dyno...which is what they have....so for my car to be making 300 WHP on 24 lbs is quite healthy for a 3000 lb mini (this is what the load was set to)

 

Oh ok, thanks for clearing that up. I'll be copying you once again Tuls, only to a larger extent this time, instead of $60 worth, $6,000 worth lol... Is there financing available? lolol... I WANT TURBO!!! I had this 350Z TT next to me today and I was thinking how funny it would've been to see the look on his face if I were TC'd... oh well, I shall dream on...

 

Just a little information for the people thinking of going twincharged. If you use the VGS setup you will have a throttle pulsation at 14-20% throttle settings. Took me forever to find out what was causing this.

 

I think you'd still lose the race. If for no other reason just traction. I've tuned stock internal 350ZTTs to over 400rwhp and built single and twin turbo 350Zs to ~500rwhp. They only weigh a few hundred pounds more than a Mini....

 

i thought... ( a thought, not factually based) that they weight in like at around 3500-3600 pounds... compared to 2700 pound mini... that makes up for alot of horsepower...

however... traction is still a huge issue... nice wide tires and rear wheel drive give the advantage to the 350z... unless the MINI is on dragradials or something sticky!

 

Yup, you're correct, a 300ZX twin turbo is around 3500 lbs. I'm not sure if we're talking about the 350Z or 300ZX, but the 350Z doesn't have twin turbos out of the factory. The 350Z is around 3350 lbs. Still over a 500lb advantage.

 

and this goes to the "there's always a bigger fish" theory...but you know what...I have yet to run into a Z like that....and yes...my buddies Viper spanks me...for now...LOL...and yes the 4 800+ hp supra my other buddy has will spank me on the highway....

but that's now my choice...if I wanted a viper or a supra...I'd have that...I chose the mini for now...and she's putting down enough power to run mid 12s at street wieght and spank 90% of what's on the street....it's just fun....that's why I do it...I love cars...and this is the one i am workin on now...

untill I get my Veyron LOL

 

Car and Driver lists the Z at just under 3200 and the Cooper S just under 2800. I haven't weighed either one. No doubt the cooper is lighter but I bet that wouldn't make up for the 100-200whp deficit.. Matter of fact the the built motor Zs put down like 525-540ft lbs vs 275ft lbs at the wheels! In any case I like the Mini a lot better than the Z. Just tossing that out there. Like Tuls said there's always someone faster.

 

There are a couple of TT 350z's in the area, one has stock internals and is tuned to around 400 whp and the other has built internals and is tuned to over 600 whp. I cant wait until the summer. The 350's are a nice car and a good platform that can get into the 13's with just bolt on's. I think a highway pull between a car like Tuls and a stock internal TT 350 would be a close match.

 

350Z's and G35C's weigh around 3400-3500 lbs, so we still have the weight advantage... and the race would have to be rolling so traction wouldn't be an issue... and the 350z would have to have the stock internals meaning 350whp... but that's too many factors lolol

 

With a 2800 pound MINI and 350whp you would have equal power to weight ratio with a 3400 pound 425whp Z. However if you put 350whp in a stripped MINI then you are moving.

 

Question for all the Automotive Engineers and experts out there,
I would love to build my own twincharge kit,
and a friend has a TD 04 H turbo with a 14G comp wheel,
or a TD 05 with a 16 G compressor wheel,
which of these turbos be best suitable for the MINI as far as I can see they are pretty close to the Garrett GT28 turbo,
any advice would be great,
also I am attaching a comparison sheet.

 

If you're going to build your own turbo setup I'd look into ditching the supercharger itself and just go all turbo. Less parasitic drag on the motor, and with modern turbos, lag is a thing of the past. I'm looking into this myself, and shouldn't be too difficult especially if you know how to weld

 

You might want to talk to Eric at Helix13.com, they have experience with both adding a turbo to the MCS and with building a turbo only MCS (remove the SC but keep the intercooler). Eric says for lower cost the twincharge kit is good and also for good driveability in street use. For strict performance and track use the turbo only MCS would be worth considering. Ask Eric about the cost.

 

Does it include cost of an electric water pump or address the water pump issue in some way? Also is it available as parts only as I can do the install myself. As far as I know the twincharge kit is only available with their install. Otherwise it's a good idea, as it'll save me some time planning it all out, etc.

 

I would love to see results of turbo only. No one has done this and shown results yet. But the thing i think most everyone wouldn't like is the LAG. A turbo that will push 250WHP-300WHP will have significant lag compared to a TC kit. Lets say right now you get great torque by 2500 RPM, with a turbo only i think you will be adding at least 1000RPM to that!

For us we looked into making a turbo only version, and the cost becomes a concern because of the added parts to remove the SC, and either use the stock IC or replace with a completely different IC. Its sounds like an easy concept but it really gets kind of complicated.

 

with all the advancements in turbo technology these days I think turbo lag is minimal at best. For me the benefit would be not having the SC eat away at the power I'm making hehe.

 

The advancments have made them spool quicker, but not by crazy amounts. For instance the main advancement is using ball bearings and slightly better turbine designs give the turbo about a 300RPM quicker spool. But no advancements that make 1000RPM difference. But there is one thing that can add that kind of spool..........

Nitrous!

And from one Crazy NAM member has shown, you can get great results! from Nitrous