cafemoto

Hi there. After several months of intense reading here, I've finally joined the fray with my own turbo. I purchased Begi's S1 for my 93 and went the bandaid route. My parts list is as follows:

GT2554 turbo
BEGi Fuel System (Pierburg fuel pump and RRFPR)
Intercooler Size # 1
Bipes ACU
Olderguy O2 clamp
1.8 injectors (cleaned & flow tested)
Innovate LC1 w/ G5 gauge

It took me much longer than anticipated to install all the parts (due to limited free time), but everything's now installed. I haven't taken the car out of the garage yet as I seem to have an issue with fuel pressure. With the car idling at around 850 rpm, the fuel pressure reads around 46-48 psi. There is no change in pressure when I turn the needle valve on the regulator. With the signal line disconnected, the pressure goes up to around 50 psi. It goes up a little bit (maybe to around 52) when I turn the onset screw on the regulator clockwise. All the while, the boost gauge reads 17 vacuume, and the LC-1 gauge shows 10.2 AFR.

I've checked all the vacuume lines and don't believe I have a leak. I even switched the fuel lines going into the regulator to rule out my install error, but there's no noticeable difference. Any help from the experts here would be very much appreciated.

Here are a few pictures of the car and the finished product.

18psi

iTrader: (76)

That is a very clean car. Welcome

Joe Perez

iTrader: (8)

Irvine?

Temecula, maybe?

cafemoto

Yeah, they all look alike. I'm pretty close to Irvine. My home's where the old Tustin Air Base used to be.

Joe - I know you had bandaid set up on your old car. Any idea what's going on with my fuel pressure problem?!?!

papasmurf

iTrader: (1)

Nice miata, and I must applaud the polished motorbike in the background. Looks like it is ready to be a cafe racer.

EDIT: I just read your screen name. nevermind

Toddcod

iTrader: (8)

You got the begi fuel pressure riser right? If so fuel pressure only rises when you hit boost. that is why the vaccume line is hooked to the AFPR.

Reving in the carport won't produce sufficient boost. You have to drive the car so it gets under load to deliver sufficient boost so that the afpr will make the fuel pressure rise..

Especially on your first drive. if you hear any pops or fill some kind of studder LET OUT OF THE THROTTLE.

Good Question.....

Toddcod

iTrader: (8)

I would also adjust the afpr to rich for the first run, and work your way down slowly from there.

Although the popular thing is MS around here......I'm the one different drum that likes this setup. If you use it properly, and watch your wbo2. AND DON"T TRY 300PSI on it.

It is a great setup. you don't have to tune all the time, and tinker with crap. You can probably run 190hp dependable as stock once you get it tuned properly.

Granted my MS car was running 13-14psi and running like a rapped ape.
And my brother was only running 7psi with bandaids. Yea my car would take some vetts. But everytime I was on the side of the road, he came to pick me up.

And it would roast donuts and everything. He could take some mustangs. We needed to take him up 2 more psi though.

But anyway if used properly (<200hp)they are pretty headache free.

cafemoto

Thanks, Todd. I'll actually be returning the regulator to Begi, and they'll take a look to see if something's wrong.

Toddcod

iTrader: (8)

What type of bike is that. I'm into the cafe racers right now.

I'm sure you have already tried leaning the screw, and checking to make sure the lines are on correct, and called begi. lol

Good luck.

Need more picts and info of bike. LOL

cafemoto

The bike's a Kawasaki W650. The stock tank and the bar got damaged when I was in an accident, so I took that opportunity to make it look more vintage caferacer. The tank is from a shop in Germany and the bar is a generic clubman. I'm now looking to add a rearset.

More pictures of the car. The last one is the Merlot M that I sold to get the 93. Before the M, I had a Black & Tan 95 but can't find any pictures of that.

Toddcod

iTrader: (8)

I think I have the same rims on my miata as your white one. If not they are close.

Is that the Triumph version they came out with a few years ago? I may try to find one.

cafemoto

The wheels are Kazera KZ-M from tire rack. 15x7 30mm offset. Shod with Bridgestone RE-01R 195/50-15. The wheels are a little heavy (13.2 lb. each), but they're supposed to be durable as they were designed for spec miatas.

The w650 is a knock-off of the Triumph Bonneville, and was sold in the states from 2000 to 2002 I think. Mine's a 01 and I found it used in New Mexico several years ago.

Toddcod

iTrader: (8)

Yea, I almost bought one off the show room floor in Memphis. I later bought a sportbike.

Beutiful bike!

alex1206

My name is Alex. I am in Long Beach, I have a begi 4.2 miata running 8psi, 1.6l - smog legal.. we should meet up if you have time and compare!

alex1206

PM if you got time, i'm right off the 405

Braineack

iTrader: (62)

Welcome.

cafemoto

i got the regulator back from Begi, and everything's looking good. afr 14.7 at idle, and 12 or so at boost. i'm running 7 psi of boost and the car's is transformed. haven't fiddled too much with the Bipes, but I have the timing set at 12 (91 octane), pulling 8 degrees total, 1 degree of timing pull for each temp change of 25F*, starts to pull timing at 2000 rpms and reaches full retard at 3600 rpms.

one thing i might want to change is the intake noise. it is fairly loud with the open air filter when going into boost. i'll research a DIY box for the filter to cut down on the sucking noise. other than that, the car feels great and am happy to be motoring again in the miata... perfect timing for the mild CA winter.