Spool on stock greddy kit
 

At what RPM are you making max boost at? Did a search and didnt find too much info on the stock greddy kit. I have a 90 1.6 with stock greddy downpipe, and stock exhaust. I'm running 5psi of boost and I'll hit max boost at 5000 rpm. Does that sound right or does it seem a bit late?

I'm getting a downpipe and exhaust made this week, removing the cat as well so hopefully it will help the spool.

it will help it signifcantly.



this was rappadan's greddy:

http://i24.tinypic.com/2rzz62r.jpg

12psi at 3800RPM

It'll help a lot, the Greddy downpipe is horrible.

5000 RPM still sounds a bit late. Make sure you don't have any exhaust leaks and that the there's no play on the wastegate flapper arm.

Just by tightening the wastgate rod you can hit max boost nearly 1000RPM earlier.

Thanks guys, I'll take a look at the waste gate rod tomorrow night

I tighten the rod by following these instructions right?

https://www.miataturbo.net/forum/t17239/

Yes.

holy crap.. adjusting the WGA made a huge difference. It seriously feels like a completely different car now.

Thanks guys

I'm sure you know, but tightenting the arm has increased your boost a bit too. So you did compensate for this with fueling and timing right!!!!

It feels completely new because you're boosting more psi AND faster!

Or, like most Greddy kits, the wastegate flapper is loose from the factory and tightening the rod a smidge takes up the slack. When I got my Greddy, the flapper was so loose you could hear it rattling. Two turns on the rod took up the slack, leading to faster spool but no increase in boost.

Static disc regulator. Adjusts itself according to boost.

Untill it asks for more pressure than the fuel pump can provide.

I'm not sure the OP wants to run 10psi on band-aids, hes just trying to get a little quicker spool. But yes you are right.

.... and the RR-AFPR sorts the timing too yeah?
:-)

But yes, my arm was loose fromt he factory too, so just getting it *taught* is probably no issue at all.

You might need to worry if you've wound it back to as short as it will go, I was boosting to 8-9 psi like this.

on a stock greddy kit, expect to see boost at 4k or later



throw some mods at it, and you can see it much lower with much higher boost levels
iv had two greddy kits and both spooled fully around 3400 wth 11 psi

Hmm, mine used to spool real low and quick like 1.8-2.4k and bov always seemed to release a lot of air between shifts but now it seems to reach full boost 5-6psi at about 4-5k rpm. I have a turbo tony dp and large fmic , forge bov, custom 2.5" exhaust and high flow cat. No changes to amything since turbod. Any ideas as to why the car seems to spool longer now?

check for boost leaks

...and exhaust leaks. (pre-turbo)

check the waste gate, might not be tight

Even better solution - replace the can with one that's eaten some spinach. ;)

I kept an eye on the boost gauge and it never gets past 5psi all the way to redline.

correct, just 5psi for now until I get the megasquirt, injectors and everything else needed.

On another note, I just dropped the car off to have a downpipe, 2.5" mandrel bent exhaust with no cat made.

Should be done tomorrow but I wont have time to pick up the car until friday then its directly off to Buttonwillow. I'll let you guys know how that goes.

I actually have the 300zx wastegate. The Turbo setup actually came off Rappadan's ride and I made my own FMIC, exhaust, heat sheild, running on Supra injectors and a walbro 195lph.. I also rebuilt the turbo and everything ran great till recently. I'll have to get under the hood again and check for any leaks.. I'm not 100% sure but I've also noticed I'm running real rich at full throttle so It may be bogging me down. I've yet to wire my WBO2 to the MS and I have almost no activity from my NBO2 on the Megatune so I'm guessing I have a lazy NBO2 at the moment... Well at any rate I am very happy with the Greddy kit and can't wait to get a Boost controler and step it up a bit.

Glad you were able to adjust the Wastegate rod and got your car running beter. What RPM do you hit Full boost at now???

You may experience some boost creep after that exhaust goes in. :2cents:

I believe Im getting full boost under 4k.

Is 10psi on bandaids not a good idea? :)



Greddy is actually pretty good ;p

get a new dp and throw away the cat.

i have a turbo tony downpipe for sale., pm me if u want it

i ran 10 psi on my greddy kit with bandaids for months and months of hard driving, and it was fine

wut is bandaids? Must know jargon.

wow, pitt, ur quote in ur sig... just wow

LOL @ it, where'd it come from?

lol at the video:

http://www.spike.com/video/miata-song/3041357

Minor update....
holy shit the car makes a lot more power now with the downpipe, exhaust and no cat. Took it for a spin around the block before I loaded it on the trailer. Tomorrow is going to be very fun!

Told you so.