As far as i know if you kick it hard, on increased boost, there could be a hot situation in the exhaust... more power->more fuel-> more heat-> hotter turbo -> too much heat... And nor the turbo, nor the exhaust likes that. I read it about rally cars, so i dont know, if our one do such big heats, like 900°C.
this is for checking if the cars running rich or lean
if its too hot its running lean i think ?
or it could be the other way round
if your doing your own mapping it can help you work out if its running lean or rich
but if your having it done at a rr or a mapper they have the equipment to moniter the af ratios so theres no need for it
would be ok to adjust a rrfpr if you turned the boost up a bit
youd have to check what the correct temp should be tho
THE most important gauge for any modified Starlet or any modified car for that matter. Exhaust gas temperature relates directly to the condition of the tune, excessive lean conditions and excessive rich conditions will both cause high EGT's.
High temps as you know are what kill engines so using an EGT will safe guard you pretty much from destroying your engine. Ideally you want one with a peak warning mode so that it tells you once you reach a preset EGT limit, it's okay to have one with out peak mode but I personally find when your flying along in a 300hp FWD monster it's very hard to keep an eye on the gauges and the road!
Ideally you don't want to be seeing more than 850-900 degrees on boost, anything over this means something isn't right whether it be excessive boost, poor tune etc etc. These values will depend on where you install the EGT sensor, you ideally want it at the hottest part in the turbo exhaust housing. Sometimes this isn't always possible so the next place imo is in the manifold runner, the hottest one although in general the 4e/5e heads produce pretty even flow so we tend to go for no1.
In basic it gives you up to date information which could potentially safe guard your engine. Touch wood but I've had a lot of Starlets, running some mad specs and I have NEVER blown an engine. There have been plenty of times when I've noticed high EGT's and backed off, now if there was no EGT in place I would have carried on as per normal and possible done a lot of damage. I've never actually had a modified Starlet without one. IMO the best gauge money can buy.
If anyone is interested I'm also about to put the full line up (All 7) of the Greddy gauge series on ebay all with peak warning and EGT is also included. Will be around 40-50% off retail at auction.
Thanks
T
Regardless of whether you map your own car or have it mapped by a company it's still an essential gauge. A week later you could get a massive boost spike and the AFR probe will still be back at the mappers, see where I'm coming from!
THE most important gauge for any modified Starlet or any modified car for that matter. Exhaust gas temperature relates directly to the condition of the tune, excessive lean conditions and excessive rich conditions will both cause high EGT's.
High temps as you know are what kill engines so using an EGT will safe guard you pretty much from destroying your engine. Ideally you want one with a peak warning mode so that it tells you once you reach a preset EGT limit, it's okay to have one with out peak mode but I personally find when your flying along in a 300hp FWD monster it's very hard to keep an eye on the gauges and the road!
Ideally you don't want to be seeing more than 850-900 degrees on boost, anything over this means something isn't right whether it be excessive boost, poor tune etc etc. These values will depend on where you install the EGT sensor, you ideally want it at the hottest part in the turbo exhaust housing. Sometimes this isn't always possible so the next place imo is in the manifold runner, the hottest one although in general the 4e/5e heads produce pretty even flow so we tend to go for no1.
In basic it gives you up to date information which could potentially safe guard your engine. Touch wood but I've had a lot of Starlets, running some mad specs and I have NEVER blown an engine. There have been plenty of times when I've noticed high EGT's and backed off, now if there was no EGT in place I would have carried on as per normal and possible done a lot of damage. I've never actually had a modified Starlet without one. IMO the best gauge money can buy.
If anyone is interested I'm also about to put the full line up (All 7) of the Greddy gauge series on ebay all with peak warning and EGT is also included. Will be around 40-50% off retail at auction.
Thanks
T
Awesome write up there! Very informative! Still, dont fancy having to drill a hole in my mani though!?
Pm`d regarding those gauges coming your way!
**edit** just seen your post on the gauges, fancy sending me the ebay link when you have it sorted? Cheers
They are 60mm, I can't for love nor money read 52mm gauges just too small for aging eyes :haha:
I'll post the link up here guys.
You can tap a hole in the manifold in seconds, if not confident get a professional to do it is a piece of pish if you have some decent self tappers
T
Wont that just encourage it to crack? Have you experienced no problems with it before?
he wouldnt give you bad advice !